I’ve been reading the comments and a lot of individuals are misinformed! There’s 2 types of Blue Devil Sealers! Yellow label needs the thermostat removed! White label the thermostat does not have to be removed! I used the white label Blue Devil in my 2005 Corolla and it worked to perfection!
@OnlineAutoRepairVideos Thank You! I really appreciate that! It does work. People just need to read/follow the instructions and also do research on the Blue Devil head gasket products.
I’m going to try this tomorrow for my 2015 Subaru Legacy. I have a new engine coming but I need my car for work or I will go broke. So glad I found this product even though I haven’t used it yet and I’m very glad I found this video because most likely I would have ended up doing it the wrong way. Thanks a bunch!! Will update post tomorrow!!
Used on my 97 Acura TL back in 2011........and still going and no overheating in 10/14/23. Just acquired a 95 Legend and the same thing and used it and worked.
Did you use the whole bottle at once? I just got a 2002 Saturn S-Series. Mine has a cracked head gasket. Its temperature meter goes from below half to the red side after excessively driving. So did you use the whole bottle at once on it?
I followed your guidance and used the blue devil head gasget sealer treatment, I am letting it cool and then will put thermostat back in. So far so good. No more bubbles are going into overflow tank. Or into the air bleeder funnel while engine was running. Fingers crossed 🤞 will let you know how things turned out over the next week or so. Thanks for a great instructional video. This beats forking out $1500 + to have head gasget replaced. Cheers TS in Central Texas.
Hey man, thanks for really great video. I used this product on my 99 Mustang 3.8 and it worked really well. The only problem is that the head gasket blew again and I am trying to find out if you can use this product second tiime. The main question is, would it seal again?
I bought a 2004 GS300 recently and it ended up having a blown head gasket. I should have known better, knowing how cheap the car was and what its book value was. But I still love the car everything about it is wonderful. So I’m going to try the blue Devil and see if it lasts me a couple months until I can afford to replace my engine with a JDM engine from Japan.
I tried blue devil pour and go at first and didn’t take thermostat out. I folled directions and let it sit for 50 mins but little did I know my heater core was clogged up and that’s why I wasn’t getting any heat in the cabin. So since I wasn’t getting proper coolant circulation in my system I drained it and then the next day my gasket tester kit came in the mail so I done a head gasket chemical test on it and the liquid turned green from blue. The kit works like this… You pour the blue chemical in the flask and put it in your radiator opening. then you squeeze the bulb and if the blue liquid turns yellow then you have a blown head gasket. Since my liquid turned green that told me that I have a small leak in the head gasket even after The 1st batch of pour and go blue devil. So I replaced my heater core and got my heat working and coolant flowing good then I bought the non pour and go bottle and took my thermostat out and followed the instructions carefully. Let it cool down and drained the blue devil and refilled with coolant and the used my gasket tester kit again to see if it turned green again and was very impressed with blue devil! My tester liquid was as blue as it was when it came out of the bottle!! So very impressed and as far as I can tell there is no damage to my car system and boy does it feel good to have my heat back at the start of this winter!!
Let me let you in on a little secret, you can unclog your heater core with CLR, use it the same way as if you were flushing out the radiator, and it will clear all the rust from your radiator.
This works great. I’ve used it on multiple cars over the years and they always worked. Even on severely blown heads that over heat in 10 mins just gotta keep recycling every time it cools let it run again and again it’ll seal soon. One car it lasted 6 months another it lasted 3 years. It’s a guessing game good if you’re broke and can’t afford a head job. Just don’t race the car ever ride it easy
My 2nd gen crv pushing exhaust gases in coolant, reservoir boiling and overflowing. Should i do it with radiator cap removed to avoid back pressure of exhaust leak? Spark plig remove? Trick Radiator fan on for whole time?
I’m curious, when it stopped working after 3 years, did you use blue devil a 2nd time? I used blue devil and it worked for 2500 miles so far. Would be willling to do again if it wears off.
I let my mechanic do the job on Prius 2010. I brought him 2 gallons of antifreeze and he only used one. He did the job within an hour. On my way to work I saw the temperature light came on. When I get to work, I opened the hood. There was barely nothing on the reservoir. On my way home The temperature light came on twice and went out. I figured it was low on coolant. at home, I started my car in maintenance mode. Turn the heater on, but there was no heat and the car started overheating. I could’ve done a better job myself just don’t have the time now. I think my thermostat is probably clogged. Please does anybody have any suggestion what to do next? Awesome video by the way you’re helping a lot of people thank you.
What a great video. I have a 2009 Mini one and I really don't want to take off the termostat, it's a pain in the neck. Thank goodness there is the White label. Cheers for this.
my car runs on gas and petrol i have the bottle here but have been putting doing this off for months do i run it on gas and petrol when putting in blue devil sir .i just subscribed to your channel too
Will be doing this on my '94 BMW E34 later today, just have to remove the thermostat. If it doesn't work, I plan on rebuilding the head anyway. I also by passed the heater core as I don't want to risk damage or within the heater valves. Those are not cheap to replace.
@@eaglerider94 hello there question did you follow all the steps like in the video? Also did u by pass heater core like u said? I’m going to give it a try on my car just didn’t know how to go about it.
Hi..not to try to rush you but I hope you can respond immediately.. what if my heat won't come on??? I hit a dear and my AC still blows strong but the air stopped coming in cold or hot..
I have motor 4.8 chevloret express with heating problem. We replaced all coolant system. Now I want use the best heat gasket sealer. That is my work car. You recommend to me the blue devil is de best brand or another one?
Very well explained brother, but what about vehicles without a radiator cap? my 2018 Chrysler 300 doesn’t have a radiator cap and I am really hesitant to use this product. Thanks.
@jmcgrew23 my question is when you un clamp the top radiator hose and coolant comes out during that process do you pour that coolant back in the reservoir before you start your car to idle for 50 minutes?
@onlinerepairvideos Did this work on the 2014 maxima or did it end up not working? How bad was the radiator bubbling or how bad was the leak? I jusy want to know because i have the same exact car with the same exact problem
I've found that if i pull the spark plugs till i find the cylinder with the bad head gasket and leave that plug out while running the sealant in the engine has given me better results i think its because with the plug out the sealant is able to get in to the bad spot of the gasket rather than getting pushed out by the combustion gasses. And even then these type of head gasket sealant are only a short term fix
@@DeforestLCooper fallow the directions of draining the coolant the reason i have left the spark plug out is so the sealant can actually get where it needs to be also if its a fuel injected car unplug that injector if possible to lessen the chance of a fire
I have a 2005 Lincoln Towncar. It only has the radiator reservoir for me to add water or coolant. So, now Im told to add it all through the top radiator hose. If I do it that way, then I dont need to drain anything from the radiator and the existing coolant in the reservoir? Does this change how much Blue Devil that I will need? Thanks
The best way is not forget to close your radiator cover or never use a radiator cover that's rusty and not very tight. That's how I lost my engine almost twice.
Would you recommend draining the radiator only or removing the engine plug also and draining everything? I’m guessing you don’t want a trace of coolant for it seal properly, correct? Or in some coolant in the engine okay? Thanks.
@@DeforestLCooper I would drain all of it. Its easy once you get started. You can also flush it several times with a water hose or buckets of water. I fixed mine with blue devil.
Thanks for the excellent explanation. Most people who do not know now will understand how a coolant system works... This is what I was wondering. The bottle does not say to remove thermostat and I thought to myself that if this stuff works it can clog radiator or thermostat or heater core. As a result of your video I will be removing thermostat, stat.
You've got the "Pour and Go" version. The "Yellow Label " version clearly says to remove the thermostat. The yellow label has a better chance of sealing the leak.
there are 3 products, 2 they don't say to remove the thermostat, this one with the YELLOW they say to remove the thermostat, but they don't say to flush the coolant at the end only to put enough antifreeze. I'm still not sure about which to use, seems the one where you remove the thermostat is the one to use...
I have a 2014 Chevy Cruze LT and I cannot for the life of me find my radiator reservoir thing and I can’t find anywhere to tell me where it is. So I’m wondering if you know where it could be. Cause the only thing I see is the overfill tank
On a closed system do I add the product through the tank on the fender, my Mazda Tribute does not have a radiator cap in the traditional sense. I'm sure this is a no brainer to people familiar with a closed system, but this is new to me, thanks.
Issue with removing the thermostat on a 2011 Ford explorer V6. The gasket goes behind the thermostat. The first time I tried water / Blue devil was seeping out of the thermostat housing, Captain eye on it let it do its thing did not work. This is my second time trying but I left the thermostat in. Used Blue devil in the past always worked. I'm catching this head gasket leak early starting having coolant leaking out of the exhaust.
Hello! What if my heater system doesn’t work? I won’t be able to turn it on. It’s a 87 c10. Will it still be ok to use this product? What do you suggest. Thanks in advance
@@OnlineAutoRepairVideos I brought the truck a while back and the whole AC / Heating system doesn’t work, I guess is not connected? Thanks for the advice
I have a 2005 Chevy Uplander with 400,000 km(250,000 miles) on it. The exhaust gas pressure(from a blown head gasket or a warped or cracked head)was forcing the coolant to overflow in my expansion tank and causing the engine to overheat. I thought the vehicle was toast. As a Hail Mary, I thought I'd try Blue Devil yellow label. I followed the instructions to a tee even though removing the thermostat on these 3.5 liter V6's is a bitch. To my surprise, it actually worked. For how long I have yet to find out. Fingers crossed.
@@fizzyfizz101 It's still working more than 3 weeks later, don't know for how long. Just in case I bought a 3.5-liter engine from a wrecker with 91 thousand km on it for $560. That's my backup plan. I'll drive on the old engine until it fails.
The directions says to top it off with coolant, but we drained all the water, reinstalled the thermostat, and then filled it with coolant. Customer called us yesterday that the car is doing good.
I put blue devil in my 2003 Honda Pilot with 340k, and 2500 miles later it’s working perfectly. How long does it usually last? Let’s say it fails in 30,000 miles, should I try using it again?
will be trying this out tomorrow on my 2003 Nissan Sentra I did a combustion leak test and tested positive for a head gasket leak but still no coolant in the oil dipstick but it overheats i already changed the thermostat and radiator and some coolant lines and sensors hope this works
You can. You can run straight water if there is no danger of freezing. You can dilute a 50/50 mix in half or more and it still won't freeze even if it's badass cold where you live.
@@AlexanderPapi7engines cool fine on water, despite the slight extra viscosity. It's freezing and corrosion protection that water lacks. Also, if in a warmer climate or just for the summer it doesn't hurt to run a little more water than 50/50.
Here’s another thing you could do and works even better. Once you let it get hot and have the metal expand. Undo the spark plugs. Let the blue devil work it’s way in with all that loosen pressure then tighten back.
My seals are part of my thermostat the way it’s made. So when I remove them, the water just leaks, even if I use sealant. Plus I have two thermostats on the housing not just one. This did not work for me at all.
@@damahom92 I was able to drive it to the destination had to pull over a few times to let the engine cool down. I could see the smoke coming from the radiator and the thermostat rising. It made a significant difference however
I've used Blue devil in the past and never removed a thermostat first. But he could be right. It just seems like kind of goofy cuz if you're going to turn on the heat all the way and go drive the car right after you pour it in then it's going to open up the f****** thermostat and then the damn thing is going to f****** run fluid through all the whole motor everywhere in the coolant system and then the thing does its job. I don't see why you would want to take a thermostat on out and run your vehicle without a thermostat for any amount of time. Not to mention that afterwards you're going to have to turn around and drain all that coolant out again to put the thermostat back on or you're going to have a mess. Just like you said when he took the housing off in the first place zero out of 10. Do not listen
@@OnlineAutoRepairVideos its a BMW 745 i bought for $400...and as a v8, I wasn't sure if I should use good oil or not for this procedure (definitely good oil AFTER if it works). Thanks
It’s funny that Blue Devil dose not mention to remove the thermostat in the directions I consider to be a knowledgeable street mechanic and follow how repair vehicles to a tee. I performed the procedure by following the directions on the back of the bottle I removed the thermostat flushed the engine, heater core and radiator drained again then after that I filled it with coolant and the Blue Devil everything worked perfectly after the next day I drove the vehicle to work got on the highway I happened to glance at my temp gauge i noticed it was close to overheating it almost reached the H so I immediately shut the truck off costed to the emergency lane waited for 8 hours on the highway with no heat with the out side temp @ 30 degrees I was very upset had to call of work. When tow truck finally arrived I finally got the vehicle home drained everything as I went to remove the thermostat out lord behold the thermostat was gumed up stuck closed I was shocked stumbled on this video listen repeated the process again this time left the thermostat out and had no had any overheating issues yet had I not seen this video I would had junked the vehicle and some one else would be driving the vehicle this saved me a lot of money thank you for making this video!
The head gasket sealer says , rule # 2 in red letters . Remove thermostat . I don't know about the new cheaper pour and go stuff . But I'm looking at the bottle of blue devil head gasket sealer in front of me I just used . RULE #2
I’ve been reading the comments and a lot of individuals are misinformed!
There’s 2 types of Blue Devil Sealers!
Yellow label needs the thermostat removed!
White label the thermostat does not have to be removed! I used the white label Blue Devil in my 2005 Corolla and it worked to perfection!
I've got a find a way to PIN YOUR COMMENT! So sick and tired of people saying "you don't have to remove the thermostat"
Just PINNED it, thanks for speaking up and saying that!
@OnlineAutoRepairVideos
Thank You! I really appreciate that!
It does work. People just need to read/follow the instructions and also do research on the Blue Devil head gasket products.
@@kelj4517 EXACTLY!
Damn glad I saw this I got the yellow label hopefully I can return it and by the pour and go so I don’t have to remove my thermostat
I’m going to try this tomorrow for my 2015 Subaru Legacy. I have a new engine coming but I need my car for work or I will go broke. So glad I found this product even though I haven’t used it yet and I’m very glad I found this video because most likely I would have ended up doing it the wrong way. Thanks a bunch!! Will update post tomorrow!!
How did it work for you? I have the same problem with a 2015 Crosstrek
So did it work?
50 min in neutral or parking ..thank you..best video so far
Doesnr matter
Doesnr matter
So let the car sit in parking for 50min after putting blue devil in then it will stop smoking?
I use it on my truck for 4 years it still running good it works really well ❤❤❤
How often do you use your truck? And do you travel long kms often? Like heavy driving at all or no?
@@bibektimilsina4191 daily ever day 2 hours going close 5 years still holding up
Which label did you use the yellow label or the white label?
@@GabrielSoto-z2f yellow i belive
My mechanic was telling me about this process. I like how you explained it step by step. I appreciate you for making this video
You're very welcome!
Im listening to Kevin Hart give mechanic advice lol
LOL!
I didn’t notice his voice until u said something 😂
@@gdoggperry8779 LOL
Used on my 97 Acura TL back in 2011........and still going and no overheating in 10/14/23. Just acquired a 95 Legend and the same thing and used it and worked.
Did you use the whole bottle at once? I just got a 2002 Saturn S-Series. Mine has a cracked head gasket. Its temperature meter goes from below half to the red side after excessively driving. So did you use the whole bottle at once on it?
Did you do the same process here and use the while bottle ?
@interstellar3374 9:08
😂😂😂 you know how it's half the bottle... you look in there.. got me crying laughing....thanks mayne!
🤣🤣🤣
Very well explained here in this video. Great job! Thanks!
THANKS!
I followed your guidance and used the blue devil head gasget sealer treatment, I am letting it cool and then will put thermostat back in. So far so good. No more bubbles are going into overflow tank. Or into the air bleeder funnel while engine was running. Fingers crossed 🤞 will let you know how things turned out over the next week or so. Thanks for a great instructional video. This beats forking out $1500 + to have head gasget replaced. Cheers TS in Central Texas.
Crossing our fingers as well!
Did it work?
Yeah how’d it work?
Still holding after 200 miles in Central Texas. I have been emptying a 10 x30 ft storage unit so I have been putting heavy loads on the engine.
Hey man, thanks for really great video. I used this product on my 99 Mustang 3.8 and it worked really well. The only problem is that the head gasket blew again and I am trying to find out if you can use this product second tiime. The main question is, would it seal again?
I bought a 2004 GS300 recently and it ended up having a blown head gasket. I should have known better, knowing how cheap the car was and what its book value was. But I still love the car everything about it is wonderful. So I’m going to try the blue Devil and see if it lasts me a couple months until I can afford to replace my engine with a JDM engine from Japan.
How did it go ?
Excellent explanation, my follow up question is as follows, will you need to bleed while adding coolant?
yeah
What if my heat don't work will it still help me
I have coolant leak coming out of bell housing, like fast and alot. If the truck is off when you add it wont it just run out like the coolant?
I tried blue devil pour and go at first and didn’t take thermostat out. I folled directions and let it sit for 50 mins but little did I know my heater core was clogged up and that’s why I wasn’t getting any heat in the cabin. So since I wasn’t getting proper coolant circulation in my system I drained it and then the next day my gasket tester kit came in the mail so I done a head gasket chemical test on it and the liquid turned green from blue. The kit works like this… You pour the blue chemical in the flask and put it in your radiator opening. then you squeeze the bulb and if the blue liquid turns yellow then you have a blown head gasket. Since my liquid turned green that told me that I have a small leak in the head gasket even after
The 1st batch of pour and go blue devil. So I replaced my heater core and got my heat working and coolant flowing good then I bought the non pour and go bottle and took my thermostat out and followed the instructions carefully. Let it cool down and drained the blue devil and refilled with coolant and the used my gasket tester kit again to see if it turned green again and was very impressed with blue devil! My tester liquid was as blue as it was when it came out of the bottle!!
So very impressed and as far as I can tell there is no damage to my car system and boy does it feel good to have my heat back at the start of this winter!!
Did you have to drain all the antifreeze first? And run the car with just the blue devil then added water accordingly ?
Let me let you in on a little secret, you can unclog your heater core with CLR, use it the same way as if you were flushing out the radiator, and it will clear all the rust from your radiator.
This works great. I’ve used it on multiple cars over the years and they always worked. Even on severely blown heads that over heat in 10 mins just gotta keep recycling every time it cools let it run again and again it’ll seal soon. One car it lasted 6 months another it lasted 3 years. It’s a guessing game good if you’re broke and can’t afford a head job. Just don’t race the car ever ride it easy
My 2nd gen crv pushing exhaust gases in coolant, reservoir boiling and overflowing. Should i do it with radiator cap removed to avoid back pressure of exhaust leak? Spark plig remove? Trick Radiator fan on for whole time?
head job 😂
I’m curious, when it stopped working after 3 years, did you use blue devil a 2nd time? I used blue devil and it worked for 2500 miles so far. Would be willling to do again if it wears off.
My coolant won’t fill
It leaks out the engine block
💯
Thanks for the video bro. I’m going to try it this weekend.
Would i be able to do this job on a hill when the car is facing down?
No do it up hill.@oj213
Great video really liked the drawing you did explaining the reasoning of removing the thermostat
I let my mechanic do the job on Prius 2010. I brought him 2 gallons of antifreeze and he only used one. He did the job within an hour. On my way to work I saw the temperature light came on. When I get to work, I opened the hood. There was barely nothing on the reservoir. On my way home The temperature light came on twice and went out. I figured it was low on coolant. at home, I started my car in maintenance mode. Turn the heater on, but there was no heat and the car started overheating. I could’ve done a better job myself just don’t have the time now. I think my thermostat is probably clogged. Please does anybody have any suggestion what to do next?
Awesome video by the way you’re helping a lot of people thank you.
what measurement should i use for my 2009 honda accord with 2.0L engine
I only have a lot of bubbles coming out of the radiator and coolant filling up overflow reservoir. Would blue devil help to stop these problems
What a great video. I have a 2009 Mini one and I really don't want to take off the termostat, it's a pain in the neck.
Thank goodness there is the White label.
Cheers for this.
Thanks, and yeah that's a good idea to use that one.
my car runs on gas and petrol i have the bottle here but have been putting doing this off for months do i run it on gas and petrol when putting in blue devil sir .i just subscribed to your channel too
Will be doing this on my '94 BMW E34 later today, just have to remove the thermostat. If it doesn't work, I plan on rebuilding the head anyway. I also by passed the heater core as I don't want to risk damage or within the heater valves. Those are not cheap to replace.
Well, I'll be damned. It worked!
@@eaglerider94 hello there question did you follow all the steps like in the video?
Also did u by pass heater core like u said?
I’m going to give it a try on my car just didn’t know how to go about it.
this is the best video i have ever seen on how to use Blue Devil, excellent explanation, very useful.
Glad it was helpful!
What if I bypassed the heater core? You think I’ll be able to use the product and work the same?
Yes
Should i replace the oil before putting it in?
Will it mess my truck up running with the water in the oil untill the product works
Good question! I would change the oil before and after. Use a cheap brand oil before.
So I followed instructions to a T and truck was idling and climbed all the way up to overheating temp. Any reason why?
Hi..not to try to rush you but I hope you can respond immediately.. what if my heat won't come on??? I hit a dear and my AC still blows strong but the air stopped coming in cold or hot..
I have motor 4.8 chevloret express with heating problem. We replaced all coolant system. Now I want use the best heat gasket sealer. That is my work car. You recommend to me the blue devil is de best brand or another one?
Do you think I could use this on a Hino 268a
My blower motor is out will that be a problem?
Thank you for the video. Do you think this would work if there is some oil (engine oil) in the antifreeze?
Yes you gotta flush it out first
What if you don't have a heater core an no way to use the heat
Very well explained brother, but what about vehicles without a radiator cap? my 2018 Chrysler 300 doesn’t have a radiator cap and I am really hesitant to use this product. Thanks.
Top radiator hose.
@jmcgrew23 my question is when you un clamp the top radiator hose and coolant comes out during that process do you pour that coolant back in the reservoir before you start your car to idle for 50 minutes?
Hey brother is it good to use in freezing temperatures in canada
My car didn't have a thermostat must i install a new one after or not
@onlinerepairvideos
Did this work on the 2014 maxima or did it end up not working? How bad was the radiator bubbling or how bad was the leak? I jusy want to know because i have the same exact car with the same exact problem
Yes it did work, until the customer overheated the car AGAIN!
I've found that if i pull the spark plugs till i find the cylinder with the bad head gasket and leave that plug out while running the sealant in the engine has given me better results i think its because with the plug out the sealant is able to get in to the bad spot of the gasket rather than getting pushed out by the combustion gasses. And even then these type of head gasket sealant are only a short term fix
Would you recommend draining the coolant from the radiator only or pulling the engine plug as well?
@@DeforestLCooper fallow the directions of draining the coolant the reason i have left the spark plug out is so the sealant can actually get where it needs to be also if its a fuel injected car unplug that injector if possible to lessen the chance of a fire
Excellent video. Thank you!
I have a 2005 Lincoln Towncar. It only has the radiator reservoir for me to add water or coolant. So, now Im told to add it all through the top radiator hose. If I do it that way, then I dont need to drain anything from the radiator and the existing coolant in the reservoir? Does this change how much Blue Devil that I will need? Thanks
No it does not, hope this helps.
If you take the thermostat out tho your motor wont get up to running temperature tho???
it will get to operating temp, it will just take longer
If cooling fans aren't working correctly van I still do this process?
That is a good question, and I would guess no because the vehicle will overheat. If you can jump the fans, that may work.
@OnlineAutoRepairVideos that's exactly what I was going to do. Any suggestions on videos of how to jump the fans on 2008 nissan altima?
@@kevo8111 Sorry, not sure on any good videos to do that.
Will dis wrk if heated not working
Yes
The best way to prevent head gasket damage is to change the oil on time always, I learned that lesson two years ago the hard way.. lol
LOL!
That right it true
Not true.
The best way is not forget to close your radiator cover or never use a radiator cover that's rusty and not very tight. That's how I lost my engine almost twice.
I know the what but wanted to know the why and I think you just gave it to me! Ugh
Can I use coolent/antifreeze to top it off
All automotive questions are answered through our next call-in live show: fb.me/e/3xC4ToXsM
I have a 03 ram 1500 and my heat doesn’t work. Will this method still work for me?
Yes
can i use it on my motorcycle honda cbr 125? 2006..
My radiator cap spits coolant out when the car starts so how would I add it
Will this still work if my heater doesn’t work ?
Yes
@ thanks alot bro 🤝
Where do I put the blue devil liquid in an 01 GMC Yukon I don't have a radiator cap.
It has a coolant reservoir. That's where you add it.
Don’t do that you have to use the top radiator hose
If you use extra it will not clog your system. The product is free flowing until it is heated by gas from the leak.
Would you recommend draining the radiator only or removing the engine plug also and draining everything? I’m guessing you don’t want a trace of coolant for it seal properly, correct? Or in some coolant in the engine okay? Thanks.
@@DeforestLCooper I would drain all of it. Its easy once you get started. You can also flush it several times with a water hose or buckets of water. I fixed mine with blue devil.
Jup exactly right
Thanks for the excellent explanation. Most people who do not know now will understand how a coolant system works... This is what I was wondering. The bottle does not say to remove thermostat and I thought to myself that if this stuff works it can clog radiator or thermostat or heater core. As a result of your video I will be removing thermostat, stat.
You've got the "Pour and Go" version. The "Yellow Label " version clearly says to remove the thermostat. The yellow label has a better chance of sealing the leak.
there are 3 products, 2 they don't say to remove the thermostat, this one with the YELLOW they say to remove the thermostat, but they don't say to flush the coolant at the end only to put enough antifreeze. I'm still not sure about which to use, seems the one where you remove the thermostat is the one to use...
What to do if car starts overheating b4 the 50 minute run time
Do you think this will work on a leaking freeze plug as well?
I think it would depend on how bad the plug is leaking.
Great video.. but if i have bypass my heater core?? Will it still work??
Yes
I have a 2014 Chevy Cruze LT and I cannot for the life of me find my radiator reservoir thing and I can’t find anywhere to tell me where it is. So I’m wondering if you know where it could be. Cause the only thing I see is the overfill tank
Can you use blue devil head gasket sealer more than o
Very good question!
Will your heat be cold with thermostat out
Cool
On a closed system do I add the product through the tank on the fender, my Mazda Tribute does not have a radiator cap in the traditional sense. I'm sure this is a no brainer to people familiar with a closed system, but this is new to me, thanks.
Use the top radiator hose.
@@jmcgrew23do you still do while running
Can i use it if i don't have any heads gasket
No, the headgasket is what melts the liquid and hardens around the bad part of the gasket.
Can you just turn on the heat in the AC?
Best detailed video on this thank you so much
what if my coolant capacity is 4 gallons how much do i use?
Hey Tim I need your help with a ford focus
Issue with removing the thermostat on a 2011 Ford explorer V6. The gasket goes behind the thermostat. The first time I tried water / Blue devil was seeping out of the thermostat housing, Captain eye on it let it do its thing did not work. This is my second time trying but I left the thermostat in. Used Blue devil in the past always worked. I'm catching this head gasket leak early starting having coolant leaking out of the exhaust.
Tomorrow I’m gonna try this on my 2011 explorer. Any advice regarding the stat gasket sealing? Thanks
Hello! What if my heater system doesn’t work? I won’t be able to turn it on. It’s a 87 c10. Will it still be ok to use this product? What do you suggest. Thanks in advance
What's wrong with your heating system? It will still work though.
@@OnlineAutoRepairVideos I brought the truck a while back and the whole AC / Heating system doesn’t work, I guess is not connected? Thanks for the advice
I’m getting ready to most likely have to use it on a 74 silver eagle with a 8v71 Detroit diesel it’s pushing coolant out the reservoir and overheating
I will make a video of how this goes soon.
why didnt you flush the radiator and block out with water and the blue devil flush?
I have a 2005 Chevy Uplander with 400,000 km(250,000 miles) on it. The exhaust gas pressure(from a blown head gasket or a warped or cracked head)was forcing the coolant to overflow in my expansion tank and causing the engine to overheat. I thought the vehicle was toast. As a Hail Mary, I thought I'd try Blue Devil yellow label. I followed the instructions to a tee even though removing the thermostat on these 3.5 liter V6's is a bitch. To my surprise, it actually worked. For how long I have yet to find out. Fingers crossed.
Is it still working
@@fizzyfizz101 It's still working more than 3 weeks later, don't know for how long. Just in case I bought a 3.5-liter engine from a wrecker with 91 thousand km on it for $560. That's my backup plan. I'll drive on the old engine until it fails.
Still working after 2 months of daily driving.
@@allancrow134Still running good?
After it fixes it, do i drain the radiator and refill with the correct coolant for the vehicle? Or just keep using water?
The directions says to top it off with coolant, but we drained all the water, reinstalled the thermostat, and then filled it with coolant. Customer called us yesterday that the car is doing good.
@@OnlineAutoRepairVideos sounds good. Thanks
I put blue devil in my 2003 Honda Pilot with 340k, and 2500 miles later it’s working perfectly. How long does it usually last? Let’s say it fails in 30,000 miles, should I try using it again?
They say it's a permanent repair, but if it overheats again, I don't think it would be able to hold up
Don't you mean first drain the radiator, THEN put the thermostat back, then refill with coolant?
will be trying this out tomorrow on my 2003 Nissan Sentra I did a combustion leak test and tested positive for a head gasket leak but still no coolant in the oil dipstick but it overheats i already changed the thermostat and radiator and some coolant lines and sensors hope this works
Did this work?
@@falcon99ify nah bro car was done for wasted 90$ on that shit waste of money and my time
Damn that sucks man thank you for responding.
Sidebar question: Do you still add water even if the coolant you purchased was a 50/50 mix?
You can. You can run straight water if there is no danger of freezing. You can dilute a 50/50 mix in half or more and it still won't freeze even if it's badass cold where you live.
Why add water just add coolant water will risk overheating
@@AlexanderPapi7engines cool fine on water, despite the slight extra viscosity. It's freezing and corrosion protection that water lacks. Also, if in a warmer climate or just for the summer it doesn't hurt to run a little more water than 50/50.
Here’s another thing you could do and works even better. Once you let it get hot and have the metal expand. Undo the spark plugs. Let the blue devil work it’s way in with all that loosen pressure then tighten back.
Not advisable, especially on a aluminum head. Metal is expanded and you'll most likely strip the threads.
Without thermostat and its gasket won't coolant just leak out where housing bolts on?
Just be sure the gasket or seal is still there.
My seals are part of my thermostat the way it’s made.
So when I remove them, the water just leaks, even if I use sealant. Plus I have two thermostats on the housing not just one. This did not work for me at all.
@@ShotByStyles Simply remove the guts of the thermostat with tin snips and re-Install the rest. That way you keep your seal and no leaks.
@@dalepress1581 Thank you
Why did you use water instead of coolant?
The blue devil will flow better with the water; it will not reach everywhere you want it to with coolant.
Directions say to
Just did this process 5/9/24 10:30 am 50min run time I’ll get back
It definitely reduced the white smoke. It Started to over heat after about 20 min of city driving.
@professorsmith5337 did it work? I just did my truck Toyota tundra 03 v8 4.7L
@@professorsmith5337 I think you need to let it cool down for a good day
@@damahom92 I appreciate that
@@damahom92 I was able to drive it to the destination had to pull over a few times to let the engine cool down. I could see the smoke coming from the radiator and the thermostat rising. It made a significant difference however
This stuff works 100% but you should drive the car with the heater on faster and better results
I used the smaller bottle white label. My thermostat got clogged and I followed the instructions to a T. What went wrong?
I feel like watching this without a blown head gasket is bad luck lol.
LOL!!!!
Thank you
Is it okay if I don’t put the thermostat back in after? In about a month I’m installing a new engine anyway
Is hose water ok or strictly distilled
Yes, you can use hose water.
I use tap water for flushing but use distilled water when refilling with coolant.
Why do you have to drain the water an the blue devil after you finish is it because you can’t mix the coolant an the blue devil
We do that because we do not want any left over blue devil to clog up the thermostat.
@@OnlineAutoRepairVideos Thanks I already did mine an it worked my oil cap was getting the brown slush an now it’s not doing that anymore
Because if you live where it's cold , water FREEZES...... lmao
Do I have to flush the radiator or just drain it?
@@christinescalera420 Drain the water an coolant if it has then put blue devil an wait like 50 minutes leave it idle
It’s okay to runs the engine for 50 minutes with just water and blue devil?
Ya u can use any liquid as coolant lol
Thanks 😊
Is that your coolant reservoir ?
What happen if your thermostat isn’t separable?🤷🏻♂️
I've used Blue devil in the past and never removed a thermostat first. But he could be right. It just seems like kind of goofy cuz if you're going to turn on the heat all the way and go drive the car right after you pour it in then it's going to open up the f****** thermostat and then the damn thing is going to f****** run fluid through all the whole motor everywhere in the coolant system and then the thing does its job. I don't see why you would want to take a thermostat on out and run your vehicle without a thermostat for any amount of time. Not to mention that afterwards you're going to have to turn around and drain all that coolant out again to put the thermostat back on or you're going to have a mess. Just like you said when he took the housing off in the first place zero out of 10. Do not listen
I cannot remove my t stat on my 2.0t it's part of my water pump...
good job man
What if my car doesn’t stay start
So you didn't add water?
I used the stuff it worked pretty good until I used the stop smoke and leak then my car started smoking ironically
After letting the car idle for 50 minutes, is it safe to flush again and add antifreeze ?
Yes, but make sure the car has time to cool down because the water will be very hot.
According to the bottle it works on
• blown head gasket
• warped / cracked heads
• leaking heater cores
• leaking freeze plugs
My bottle doesn't give the capacity amounts, it just says to pour but not how much to pour.
Should you change the "milkshake oil" before or after this process?
Even though the directions don't mention anything about that, I would. Change it with some cheap oil.
@@OnlineAutoRepairVideos its a BMW 745 i bought for $400...and as a v8, I wasn't sure if I should use good oil or not for this procedure (definitely good oil AFTER if it works).
Thanks
@@sonofaleph2140 Definitely!
It’s funny that Blue Devil dose not mention to remove the thermostat in the directions I consider to be a knowledgeable street mechanic and follow how repair vehicles to a tee. I performed the procedure by following the directions on the back of the bottle I removed the thermostat flushed the engine, heater core and radiator drained again then after that I filled it with coolant and the Blue Devil everything worked perfectly after the next day I drove the vehicle to work got on the highway I happened to glance at my temp gauge i noticed it was close to overheating it almost reached the H so I immediately shut the truck off costed to the emergency lane waited for 8 hours on the highway with no heat with the out side temp @ 30 degrees I was very upset had to call of work. When tow truck finally arrived I finally got the vehicle home drained everything as I went to remove the thermostat out lord behold the thermostat was gumed up stuck closed I was shocked stumbled on this video listen repeated the process again this time left the thermostat out and had no had any overheating issues yet had I not seen this video I would had junked the vehicle and some one else would be driving the vehicle this saved me a lot of money thank you for making this video!
The head gasket sealer says , rule # 2 in red letters . Remove thermostat . I don't know about the new cheaper pour and go stuff . But I'm looking at the bottle of blue devil head gasket sealer in front of me I just used . RULE #2
@@darrenpatterson2496 Not on the poor and go bottle it dose not state that at all…
@@shaun3510pour and go is a different product entirely.