Is Synthetic Oil Bad for 4.0 Toyota Tacomas?
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- Опубліковано 17 лип 2024
- Is conventional oil actually better for your 4.0 Tacoma? Before dealing with the rear main seal I figured I'd try something else first.
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Of course the next step, whether or not if the leak persists, is to take the truck to Toyota and see if they will change the rear main seal under warranty ... but I was curious to see if switching to conventional oil would have any immediate noticeable effect.
i changed the oil on my new to me 4.0 with syn oil and developed a leak. about a quart over a few days. topped it off with conventional and leak stopped. so who knows if that is the culprit.
there is a UV dye you can add to the oil to find exactly where it is leaking.
I might try that UV dye. A quart over a few days is a big leak!
@@Tacomaholic
Y don't you try a heavier weight oil? I use 10w30 synthetic and no leaks and I can go 6000 to 7000 miles between oil changes and even then my oil still is fairly clear. Never use Fram oil filters, use Napa gold filters.
At 6:07 you misspoke, I think you wanted to say the 2.7L 4-cyl
I would say maybe it's nothing to do with the oil and just faulty gasket seal. Its not and actual gasket it's like a sealer. But I dont blame you for switching back.
I've been running synthetic in my '06 4.0 since about 100k. I'm at 418k with no leaks or problems. These trucks are beasts.
Same here,310k and runs like new.👊🏼
I'm at 191k I got mine at 165k and well the Mexican family that owned it didn't care for engine well.
I've flushed the engine and radiator because it was dark rust red.
Now its light brown with black stuff at bottom of antifreeze resivore might be metal 🤔.
Oil blacker then night.
Now that I own it I change it every 4 to 4.5k miles with full synthetic and my oil right now is light brown and last oil change was 3.7k I do my own oil changes.
Runs good needs new radiator though probably mybe something inside the engine hmmm 🤔.
Well it doesn't over heat yet so I'm good I think probably.
@@thesilentone4024 you can do light flushes with Marvel Mystery Oil, conventional MMO, or the new synthetic. I have 2 4Runners I run the 0W-20 Redline oil with 8 ounces of Archoil 9100. I run Archoil in my powerstroke and Toyotas to keep things clean. I do 5k oil changes. Look into MMO it’s cheap and will mildly clean the oil side.
Did you change it to fully synthetic or just synthetic?
@@Wan72_ I run Redline, so it’s a ester full synthetic.
I've been running full synthetic in my 15' tacoma 4.0L V6 for about 30k miles. No issues on leakage. I run full synthetic because it does keep the engine cooler than conventional. Which means the engine will last longer.
Instead of conventional, it sounds like your truck might be a good candidate for synthetic high-mileage formula.
I highly agree with this comment. I'm not sure if anyone else also tried this but I've been using mobil1 high mileage synthetic oil and I don't ever see a seep anywhere around my drain pan.
As a retired engineer my opinion is that significant monies were spent by Toyota to determine which type of oil to use. Recommending the appropriate oil is in the manufacturers best interest (financially) for longevity. I use the same oil which is provided at purchase.
Ugh. You're engineering is was off with regards to manufacturers oil. They don't spend a dime testing oil. They either buy the cheapest they can find or contract it out to the highest bidder.
@@TheBeatenPaths not true! alot goes in choosing the right oil and coolant ect
today’s industry is all about cost… sadly
I just switched to synthetic after the warranty was up about 6 months. It runs quieter, smoother and starts easier in the winter seems happier. My Dad has 285k on his and uses Royal Purple since he bought it. A little leak here and there but still mechanically perfect.
Thanks for such a thorough honest review on oil types on the 4.0L ( ours is a 2013 Tacoma TRD)
I'll tell you what my teacher told me. He said it's better to change your oil more often than to buy expensive oil. I've used Toyota oil for 30+ years and never had a problem. The camry has 350000+ on it. The 1st Tacoma had 240000+ on it. I worked for Honda for 20 years and have had Honda's for 40 years and did the same thing. Only ran Honda oil in them. I realize that the manufacturer doesn't make the oil but they definitely spend a lot of time deciding what oil they want in their machines.
This is true! Especially nowadays with those "long lasting" oils saying they only need to be changed once per year or every 15k miles. That's crazy.
I only use full synthetic on my 05 second gen and I haven't had a problem
There can be differences in how the oils react with the seal materials causing swelling or shrinking. What happens is all material specific. It's extremely nuanced.
I experienced the same problem you started out with (the lower oil pan seeping). Oddly enough Toyota had to create a lower oil pan for the oil sump pump clearance. Toyota simply cut a hole in the oil pan and installed a lower oil pan to acquire the clearance need for the oil sump pump. The lower oil pan is not sealed with a gasket but rather the Toyota Black RTV. I did reseal mine with the Permatex The Right Stuff® Gasket Maker - 5oz which is applied with a chalk gun. On the oil refill, it took 6 quarts of oil to bring the engine back up to the full. In all of this
I discovered the front main crank seal was bad and leaking and the timing cover was leaking at the upper portion on the driver's side. The timing cover was damaged as a result of something getting stuck behind the harmonic balancer (engine crank pulley) and cutting circular grooves into the surface. This story ends with the valve covers gaskets being replaced along with the timing cover that comes with a new water pump from Toyota, the engine crank pulley. There is so much stuff has to be removed just to get to the timing cover. Total cost of this repair at a reputable repair shop....$3472. Why did I spend so much money in-lieu-of just trading it in? It's has the 1GR engine which is a 300,000 mile engine and I am not ready for $600+ truck payments for 5 years or so. I truck has 171,000 miles and developing a timing cover leak at the seal point (upper righthand of the cover) is a known problem at the 150,000 to 200,000 miles.
My 2012 4. 0 came NEW , conventional , I didn't know they ran synthetic , I'm certainly no expert .
Very interesting , I learned something new .
Thanks . 👍
I would have to comment, that I think you’re leak and the fact that you’re running synthetic have nothing to do with one another. This would be a good conspiracy theory topic that would have no end to the amount of comments supporting both sides. Thanks again for the video, keep them coming.
Oh I agree. People spout all kinds of conflicting info regarding oil type, weight, etc.
My 2010 is about to cross the 200,000 and been using high mileage synthetic and had no issues
I have always used regular oil for the hotter months and i use synthetic in the cold winter months, here it get below zero all winter and it starts allot better with the synthetic oil and engine idles allot smoother when cold i can clearly hear a huge difference
Just wanted to say as a new Tacoma owner I really appreciate your videos and the throughness! Bought a 15' dcsb 4.0 with 56k and want to make it last
Thanks for watching!
Very interesting. I would have never imagined the manufacturer to specify dino oil on any of the vehicles in the last 15 years. I will have to look into that. MY truck has had Mobil1 in it practically since new. I switched to Mobil1 "High Mileage" once I acquired the truck. The high mileage oil has special additives to keep seals and gaskets from leaking. As your vehicle ages, it needs these additives to keep the seals and gaskets from getting hard and leaking. I have a 2007 Tacoma with a 6" lift and big tires so it is quite easy to slide under and inspect on a mechanics creeper but I have to have a platform to work under the hood. I have learned on other engines that certain brands of synthetic oil are better than others. When I used quaker state my van motor it would always burn oil. About a quart per change I would have to add. With a better brand, no oil was needed between changes.
Tacomaholic, thanks so much for you thoughtful and well executed videos. I just came across your UA-cam site and I thank you for answering, for me at least, the issue of conventional vs. syn oil for my '15 4.0 L V6 Taco. I usually have taken if to the dealer but this time decided to change it myself. I am using the OEM oil filter but not sure what brand of oil to use. I know all the big brands are acceptable but I am curious which conventional oil you and/or anyone else recommends for my truck. BTW, go Nats! I am in Nova and have followed the Nats through joy and sorrow since they moved to DC.
Thanks for watching! I usually use Valvoline, but any of the big names is fine provided it's the correct weight.
I'm at about 160K on my 2010, it was garage kept for its first 10 years, and it now saw it's first WV winter. I have faith in my dad's former truck for quite some time to come.
I purchased my ‘12 in thee beginning of October 2018 with 70k on the clock. The previous owner had all the maintenance records in the glove box and was using full synthetic from the first day. I’ve continued to use full synthetic since owning it and haven’t had any leaks or seepage. I inspect and look over everything as I do the oil change. I don’t expect to have any issues using full syn since tons of others are doing the same thing. Maybe take the small sump off and re seal it with new RTV and try synthetic again? Thanks for the video and keep me coming. 👍🏼
Part it out
Try slick 50. Scotty Kilmer recommends it. Love your channel. Just cleaned my throttle body this morning with the info from your video. Truck idles great now. Thanks for the information. No leaks with my 2014 Tacoma. 55k. Synthetic oil just lasts longer. Less oil changes. Only real difference I know of.
FYI, there's no gasket; it's sealed with grey RTV.
Cool . 👍
Maybe there is a component in synthetic that breaks down RTV , that why Toyota specifies conventional then ?
Sealed with toyota's black form in place gasket aka FIPG.
Its gray from the factory on new models and black when its been replaced at a dealer
Color may have been different on the older models though
I use Mobil 1 full synthetic extended performance on my 2011 Tacoma and have never had a problem. I only change it once a year or 15k miles, whichever comes first. The truck has 185k miles and I have had it for six years and put 100k miles with no issues on synthetic oil.
2006 PreRunner. Original owner and only use Mobil 1 Synthetic. 13 yrs old , 91k miles and no leaks%
Thanks for the information Bruddah 😎🤙🏾
Interesting info. I wouldn’t over think it as it is a document from Toyota Sales and not an engineering or service department/HQ. The reason they don’t give a definitive answer on synthetic compatibility is because they can’t lie to you and say no but at the same time they also want to sell you their stuff. Which gets you in the dealership. Assuming you don’t DIY or have a private mechanic.
2006 4.0 4x4 using synthetic blend (not high mileage oil) since 103,000 when bought used, I think orig. was conventional. Now have 240,000 miles and no leaks, no burning, change every 5k miles with d3 toyo oil filter. Use the weight on the oil fill cap, too lazy to check cold outside now.
3k is a little short honestly. Keep an eye on it, but 4-5k is fine. When I got mine they told me not to run synth, so I've been running standard. different than my wife's Honda civic, which is recommended for synth because of the clearances and efficiency.
We got a 2005 4runner and we got it brand new with 100 miles or so. It’s got 221k miles and runs great, only wear & tear issues. Owners manual says to use regular oil & that’s all we’ve used. We change it every 3000 miles.
i been using mobil 1 synthetic for like 10 years on my 05 taco and it works great!
That's what I was using for every oil change since changing it myself for the first time.
Do you get valve/lifter rattle on acceleration?
I don't.
TruCon78 do you have a cold air intake? Like an actual aftermarket?
ig243 drop in k&n filter
2008 4L 169k miles synthetic its whole life. No leaks other than the valve cover gaskets which is typical with the mileage.
Mine are leaking bad on my 2008 4.0 at 195k miles. Getting them replaced next week. Mechanic quoted me $275 so what the hell.
Yes me too 09 Taco 4.0 V6 only small valve cover gasket leak on the passenger-side at 160,000 miles.
05 tacoma prerunner v6 sr5 and I have been using synthetic for awhile now and now issue. I notice it runs better with synthetic.
What is interesting is the same 1GR-FE 4.0l V6 engine is used in the 4Runner and is listed as synthetic only. The 4Runner has a 6.6qt capacity vs the Taco's 5.5 quart (4wd). OCI's are 10k 4Runner vs 5k in the Taco, the 4Runner oil weight is 0W-20 vs 5W-30. The 4Runner definitely has a different higher capacity oil pan. Has anybody tried to fit the 4Runners oil pan on a Taco?
I had the same leak, it's not a hard job. Theres no gasket believe it or not, the lower half is held together with rtv. You'll have 2 studs with nuts and the rest are bolts making it easier to line up. Double bead with black rtv, let it sit for about 10 minutes then slap her back on.
Just recently resealed my 06 taco timing cover after switching to synthetic and developing a leak. I now used synthetic blend.
I did the same. I went back to Conventional Oil because especially in The Summer I was noticing the same little pinhead size dribbles.
Tried 50w for maxima vq30de due to rear main leak and leak continued. Now have 15 Tacoma, v6, running synthetic, no issues
My background is wrenching on old muscle cars. Back when all the synthetics first came out they did cause oil leaks I think the tolerances are much looser in our 4.0 V6 engines.
I also read that with the thicker synthetic oil the oil hole passages are smaller and it doesn’t flow properly.
Coming from an aviation background, there is a lot of research on this since most engines are much older. The conventional wisdom is that you should just use Dino oil and change it often. Most oils these days, synthetic or not are above and beyond what our engines need. However I still use Mobil1. Might eventually get into Dino oil for the truck.
A lot of people also use rotella diesel oil in everything from motorcycles to trucks.
I am a Rotella user, '01 Ram and '07 KLR 650. But my new baby '07 Tacoma might get synthetic. I want this truck to last forever. Previous owner took it to Super 6 Tokyo in Albuquerque for service and I'd bet they use synthetic. Great mechanic shop.
@@rhllnm I have 2 of these 4.0’s in my 4Runners 2020,and 2021. I run Redline, it’s a full syn, lots of good zinc and phosphate in it.
In 2012 I purchased a new Toyota Carolla. Recommended oil changes on it were 10,000 miles according to Toyota. Free oil changes for the first couple of years from the dealer. I just couldn't bring myself to let it go 10,000 miles between changes, so I would go 5000 miles and then after another 5000 miles, I would take it to the dealer for the free oil change. I guess they are constantly improving oils but it is hard for this old guy to adjust my thinking. I have OCD when it comes to maintenance and keeping fluids changed and fresh.
I'm with you on that one. Sooner is always better than later when it comes to oil changes.
I have an 06 v6 with 155k. I got it at 136k with Dino in it. Swapped to high mileage full synthetic when I changed at 139 and have been using that consistently up to now at 155k. No issues. I just like changing my oil 6-8k instead of 3k with conventional. I drive 25k miles a year so I don’t wanna use up *that many* weekend afternoons a year lol.
@Chano Leyva maybe it takes you ten mins but I’m factoring in the time at autozone before and after as well.
2005 4.0L Taco here, with full synthetic since first oil change every 5,000 miles with a Toyota filter (the long one). 212,000 miles and no oil leaks to date. She’s been a beast for 15 years!
Got a link to that long filter filter?
Tacomaholic it’s a 90915-YZZD3, I want to say that in the past when I went in to get filters, they would always give me the D1, which is a about a half to 3/4 inch shorter. I just take this part number off the box of my last filter when I go back to get more. They offer like a buy 4 get one free at my dealership (maybe it’s buy 3 get one free, I forget).
That's the part number I'm running and it's 3 7/8" long. Is yours a different size?
Tacomaholic nope, that sounds about right, but the dealer did give me the D1 version a few times before I knew what was going on. Not sure what the difference was, but it’s shorter than the D3, but same diameter, and same threads...
If your engine is mechanically sound it doesn't matter what type of oil you use as long as it is recommended by the manufacturer.
I've used conventional oil from day one on 2013 Tacoma.
Leaks can be great for rustproofing
Very interesting, I ran Mobil 1 Synthetic in both my 4th gen 4Runner 4.0's and never had a single leak or issue with the engine.
Mobil 1 was the synthetic that I was using in mine too.
@@Tacomaholic that's what I've been using for my 2.7. I know you say 4.0 but still leaves me wondering... gonna check when I have a min.
Kuntrykid
05, I've always used conventional but I do change it at 3500 miles its just to damn easy not to.
2014 118k no leaks no blow rotella full synthetic
An argument for the times guys. Use what you like. My opinion, newer engines are built with tighter tolerances so I will continue using synthetic. I use that with my mower and other machinery with no issues.
I've been using mobile 1 syn and Castrol syn high mileage after my last oil change @165,000 I had noticed a small leak similar to the one in this video , I thought it was the oil pan so I replaced the seal on the pan noticed it was still weeping slightly from above the oil pan turned out to be a rear main seal is going but the leak isn't to bad yet but I'll be fixing that next...I heard of changing weights to seal the leak or going to conventional but haven't tried it yet.the truck has 60% on road /40% off road miles.
Rear main seal seems to be the culprit in these cases which isn't good as that's a PITA to do.
When I called the dealership they told me that synthetic would cause the seals to leak. I would have to use conventional only. 2015 Toyota Tacoma Prerunner
Been running extended mile mobil 1 since I got my used 2015 Tacoma at 47,000 miles and I’ve had no problems at all, working beautifully! I’m reaching 70,000 miles now what would you recommend for maintenance on my Tacoma??? I’m not sure what’s next.
Keep on running the extended mileage oil. A few people have recommended I try that even though my truck only has 56k. Are you asking what other maintenance items you should tackle yourself?
If You look at your book again, I recall it having a bracket of what weight oil you can use with the engine and four and two wheel drives plus the weather you live in; but I could be over exaggerating it all and completely wrong. I am going to have to go look now so I can remember what I remember again, or something like that, ..... or whatever...
As always another great video and great information will keep this in mine on my next oil change 👍🏼👍🏼👍🏼
I use the Mobil 1 synthetic 0W20 along with the Mobil 1 filter on my 2015 taco and no issues with mine so far.
4cyl?
Oh sorry, It's a 4.0
Why the 0w20? I've seen this before, but don't understand. I use Amsoil 5w30 in my 2013 4.0
RangerTexas90 I use the exact same as you. 2015
Run 5w30 conventional !! Nissan recommends conventional for their 08 3.5, I ran full synthetic and experienced knocking after warm up , switch to conventional 5w30 & knock stopped
You're the only place i've heard say this on the internet. I'm extremely skeptical, and unless you can come up with a reason what specifically is different about synthetic and WHY it would hurt the engine and/or seals, i remain skeptical, and will continue to use synthetic in my Tacoma because of it's superior performance over conventional oil.
I have two Tacoma's, diesel and gas. The gas Tacoma, I've only used synthetic but I use 10w30 and never had an issue or anything. With a heavier wieght oil I can actually go 6000 to 7000 mile between oil changes and even then my oil is still fairly clear, I will have to make a video on it to show you guys.
4cyl or V6? How's the engine run with the heavier oil?
@@Tacomaholic
4.0L V6, it runs great. No issues since I bought it, it's my daily driver for the most part unless I drive my diesel Tacoma. Highly recommend it bro.
Hello taco😅holic, always wanted a tacoma and found exactly what I was looking for the summer of '22. 2015 Prerunner 4.0 longbed, insanely clean super low miles. To much info on oil changes, use this, use that. Talked to two service departments, one says 5w30 syn ok, other says conventional and then the internet is all over the place as what is best. The owners manual is not clear to me either. I was under the impression you can't go back to conventional after syn! The filler cap says 5w30, which one, but the windshield oil change sticker is 0w20, which one??? I thought the 4bangers used 0w20🤯 The Prerunner has the oil cooler so another half quart or so, level is spot on and super clean. What to do? I have the factory oil filter and toyota 5w30 oil. Some insight would help, thanks guys.
First! I needed to know this too. Thanks
On my 2014, I will try conventional for spring/summer/fall
How has it worked?
I have a 2011 TRD Off Road and honestly didn't know Toyota requires conventional oil for my truck. I hope I have jacked anything up using synthetic for the past 2 years 😬
I use synthetic in my 2011 for the past 40,000 miles and I only have 58,800 now with no leaks whatsoever.
When I bought my 2014 Tacoma they said full synthetic oil every 5,000 miles. After bring it to them for oil changes for about 3 years the service person was confused for why I was getting a oil change at 5,000 miles. Then she looked into it and said it calls for conventional oil every 5,000 miles. I want to do the right thing when I change it myself.
I have a mix of 3 different oils in there all different viscosity
I have a 2015 Tacoma 4.0 and the dealer has always used conventional oil in it. I asked to change to synthetic and they won't do it. I am also a Millwright for a large Brewery and we use a lot of different oils and have to attend seminars with the oil reps. and there are different oils that cause deterioration of some types of o-rings so I'm not saying do or don't but I'm sticking with conventional. I wish I could feel comfortable about using Mobil 1 because I would switch in a heartbeat, when we take equipment apart that has been using synthetic oil it is always so much cleaner inside. Question, are the V6 engines in the FJ-6's different than the Tacoma. We were looking at my buddies FJ-6 manual and couldn't find where it said not to use synthetic.
I think the Tacoma, 4Runner and FJ Cruiser share the same 4.0 engine but with slightly different tuning.
Switching from full synthetic to conventional to sidestep changing a $15 gasket is a strange calculus. I went the other route and run Amsoil 100% synthetic in my son’s 05 Tacoma TRD with the 4.0 that we just bought used with 157k miles on it. Also changed both valve cover gaskets after seeing oil on the old plugs we changed out. Passenger side cylinder bank wasn’t bad, but getting to the driver’s side valve cover was a horrible pain in the butt. The old gaskets were so brittle they literally snapped in pieces when I took them off. So address gasket issues by changing the gasket, not running inferior oil. If you want to get 400k out of your engine, run Amsoil in it, or at least a quality full synthetic (with more frequent change intervals). Be aware that oils with the label “full synthetic” only legally need to contain 25% synthetic, which is sketchy as hell. As such, most full synthetics are just synthetic blends. Mobil 1 started out as 100% synthetic back when it was first introduced, but sadly that is no longer the case.
Hey, ive been doing a lot of research about a tapping noise that increases with rpm on the drivers side of my 13 v6 taco. Wondering if you have any problems similar with yours and what you did if so
Could it be the common "Taco tick?"
You can run whatever you want but if it was me, I’d just remove the oil pan and redo the gasket and continue to use synthetic. It’s what? An hour job?
Are you still using only conventional? I went to Auto Zone yesterday and noticed that 98% of the motor oils are synthetic... My 2014 only has 50k miles, but i was thinking of doing 5w-30 full synthetic, but using the high mileage one to possibly prevent the leak you have here. Thoughts? Thanks!
I've switched back to synthetic since this video. Specifically this one: amzn.to/3heNloz
Thanks for the reply!
What size hose fits the drain port on the oil filter housing?
Full synthetic, Castro high mileage oil, i have 125 k and no leaks.
Understandable that 5w30 is required for the v6. Many brand oil are provided and everyone has their opinion on this matter. I do my oil changes and always have done it with toyota oil and filter wich i buy at the local dealer. I do it at 4k just because winter idling to warm up and summer cool off. Yet at 352k the only issue i had was the rear main at 250k wich pricey but taken care of. Good luck to everyone
What do you think of changing transmission fluid and filter? Many people have said not to do it but I believe you should. Have you done yours or planning on doing it?
I'll be doing a drain/fill (around 3 quarts) soon and do a full flush and filter change later on.
@@Tacomaholicgreat thanks!
I’m scared to, I want to but scared what might happen
That is a minor seep, its cheaper to pull the pan and reseal with toyota FIPG pet set then fill with synthetic.
The small seep on synthetic on an old gasket is just that. An old gasket, synthetic flows better and protects better.
The protection it provides is better then conventional in my professional opinion.
They said conventional oil only to prevent warranty claims during its powertrain warranty period. Its to show owners changed their oil at 5k miles or 5 months.
I use to work for toyota.
How many miles do you have on your 2014? I have 210k on my 2013! I have been running mobile 1 full synthetic for a long time now with no issues. I just like not having to change my oil as much as I do it myself now. I still change it at about 7k miles or when it starts to look a little dirty. Interested to learn what happened after you changed.
70k on my 2014. No issues so far.
There are very few difference between conventional oils and synthetic oils. Most all “high performance” “synthetic” oils fall into the Group III class of based oils. Of these the major differences are in the additives. High mileage oils are usually very heavy in zinc to help reduce friction thereby reducing heat and improving engine performance.
Group IV based oils are where the true synthetic base.oils are made. Don’t get caught up in the “my-base-oil-versus-your-base-oil” debates. The base oils that go into the oil aren’t as important to your engine as the performance that comes out of the oil. Look for oils that offer performance claims backed by industry-standard testing or real-world results is the most important factor in the oil you use.
I heard from the somewhere that switching oils back and forth is bad for the truck? I have been using Synthetic on my 2012 Tacoma because that's what I have always done and fearing switching it would cause some major issue.
That's one of those things people are funny about. Some say it's fine, some say don't do it. I've never had an issue switching.
Did you try re-torquing your oil pan bolts?
Yep, they are good. 👍
What is the torque value for the pan bolts?
@@ryank.7920 The 10mm bolts are 80 in/lbs and the 12mm bolts are 16 ft/lbs.
Pro tip: Use a “high mileage” oil. Doesn’t matter if it’s a “synthetic” base or a “conventional”. ALL motor oil contains chemical “seal swelling agents”. High mileage oil contains extra amounts of this chemical. Saying synthetic leaks more is just illustrating how most of you fail to understand oil and how it’s formulated at a basic level. Time to learn bobistheoilguy. Start there
Very interesting. But if I took my 2008 to the dealer for an oil change (which I don’t do) wouldn’t they use synthetic?
That's part of the reason I like doing my own oil changes. Aside from saving money on the labor ... I've seen many too many hidden camera vids of lube places and dealership using cheaper oil when you pay for premium or even using the wrong weight oil.
No! They use regular oil
I used M1 5w-30 in my 97 4runner, 2002 prius, 2005 corolla and no leaks. Maybe Toyota used a inferior set of seals for the 4. lit.
Could be. There is a thread on Tacomaworld where a guy had the same issue and me and said the Toyota tech who looked at his truck said this was pretty common. Maybe a TSB or recall in the future.
@@Tacomaholic No problems yet on mine but I only have 55k on the truck. I did one major problem on the 4runner, rear seals on the axle were junk and had to replaced usually every 2 years.
I'm at 56k 😀
Are you still changing oil at 3k or 5k. Can’t find in the manual where it says the intervals? On the internet some say 3k others say 5k?
Tons of conflicting info on oil change intervals but the "norm" seems to be 3k for conventional and 5k for full synthetic.
The only real difference in oil properties between dino oil and synthetic is flow rates. Since the oils have the same viscosity, they will have the same "stickiness" (or resistance to movement). However, synthetic oil will have a much higher flow rate due to the base oil having fewer imperfections than conventional at the molecular level. Perhaps the 1GR leaks with synthetic oil because it wasn't designed to operate with oil at such high flow rates, but that's just my guess.
This is why amsoil recommends that you not use synthetic oil in an older truck because it eats away the gasket. It shouldn't on a newer track but that may be your problem
Or because older engines are not mechanically sound and synthetic oil will find a leak easily due to worn parts. Semi-synthetic is perfect for high-mileage engines.
I could have sworn analysis was do e on toyota synthetic ow-20 oils were it was formulated to better lubricate at cold stsrts and hot weather and better suited for tiyota engines because the components in the oils are better accepted by the engine.as in what went into making the engine likes the oil. I may be wrong
Could be, but nothing was said about that for the 4.0 V6 in my owner's manual.
I have a 2013 dbl cab sport w/4.0. Switched to synthetic mobil one about six weeks ago and get al lot of valve rattle now. Checked the oil level and all is as it should be. I think Im gonna put a heavier weight conventional on my next oil change.
What weight do you think you will jump up to for the next change?
Tacomaholic off the top of my head I believe I used 0w30. Im gonna confirm and most likely use 5w 30 conventional
Chris Ian Roberts that may have been what I used. Like stated earlier I need to check record. If it was 5w30 I will stick with that but go back to conventional to see if the rattle stops. It was the first time I changed it myself.
you will have valve chater if you use a fram oil fillter
@@subob5293 OCD. “Orange Can of Death” 😂. Just recently learned this, but had been using Frams since the big ol’ PH-8 on my 85 (preTaco) 4x4 Toyota.
Scotty Kilmer says all VVT engines need synthetic. Now I’m not so sure. Actually completely confused.
Oil weight is the main thing to worry about unless your owner manual specifically says only conventional or synthetic.
@@Tacomaholic As a result of this control over chemistry, synthetics have a number of significant advantages over conventional oil. You already know that synthetics flow better in cold weather, making engine starts easier and offering better protection. In addition, synthetics resist viscosity changes at extremely high temperatures that can break down or evaporate molecules in conventional oil. When this kind of deterioration happens, metal-on-metal contact may occur, causing permanent damage to the engine.
Because synthetics are slicker than conventional oil, they allow for smoother, cooler engine operation. That means more horsepower and better gas mileage. But in some cases, that same super-slick consistency may exacerbate existing internal or external engine leaks, resulting in blow-by and burn-off. Keep in mind that this happens only in engines where leaks are already an issue.
I just knocked out my Timing cover gasket. It was leaking pretty bad. I have a 4.0 also After this vid I will make the switch.
Did you do the timing cover gasket yourself?
@@Tacomaholic Yeah man I did, Is yours leaking? Love the channel!
@@Pitchpullin5 That's quite a job! Mine's good for now. How many miles on your truck?
@@Tacomaholic It was man, if you do it and need any help just let me know on TW (speedwaytaco160). I have 158K
@@Pitchpullin5 Will do! What year is your Tacoma?
Interesting! I just checked my 2015 Prerunner V6 maintenance guide and it says "NON - SYNTHETIC". So, probably everyone has been doing it wrong!
Which page does it say that?
Toyota used to say the warranty was void if you didn’t use a Toyota oil filter, so maybe Toyota wants you to get oil changes at the dealer where they use the cheapest oil they can buy
So is synthetic bad or not
Interesting. Toyota Canada doesn't specify synthetic or conventional for the 4.0L.
I'm in Canada and they told me synthetic
220K on my 06, syn all the time since new. No useage or leakage...
Out of curiosity, how many miles do you currently have and what mileage did you change to full synthetic?
56k current mileage and switched to synthetic with my first oil change at 5k.
Tacomaholic thanks for sharing :) did mine at 28k currently at 35k. 4.0 2015 no seeping yet.
Knowing how long it's been leaking is the key here. If it took 100K miles for the leak to develop, then any change in oil you do is going to make it look like you solved the problem, when in fact you could have made it worse. The scientific approach is to clean the leak area well, and continue using the same oil, noting how long it takes for oil to start leaking. Then, clean the area again and switch to another oil and observe how long it takes for that oil to leak. Compare the two values and make a more educated conclusion and course of action.
I was thought the 4.0 in the 4Runner was the same as in the Taco why on that sheet it’s two different oils
I believe it's the same engine but tuned differently.
it's not really THAT it's just thin oil..it wants it in some places...yeah. But that shits done chain strech too or rattle/chatter same with gear chatter..the heavier oil shuts that down and up Lol.