Should you let a Diesel Engine Cool Down?
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- Опубліковано 1 січ 2021
- In this video we discuss whether you should let a Diesel Engine cool down before shutting it down. How long should you let the engine cool down and what parts can get damaged by not cooling it down. Thanks for watching.
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This guy should be in a college teaching students how to become Real Diesel mechanic.
That would be a waste of potential. I’d rather him upload videos like this where thousands of people and students can learn all over the world.
@@markm0000 he deserves more money than what UA-cam is putting out.
@@markm0000 I'm sure he would do both sheesh...
Easy with the ass kissing
@@PoliticalGangster haha it was worse than ass kissing , it was out right ass sucking haha
I guess that's why I got a million one twenty five out of the original turbo on my 3406E. The only reason I replaced it was because it came with the engine rebuild kit I bought. I am a firm believer in letting the engine cool down before shutting it off. In my opinion this is one of the most important videos on diesel engines ever produced. Thumbs up.
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit...
@@teenaramsay2469 i got a new one only $30 can set the time from 10 sec to 10 mins in 10 sec intervals even has a warm up and auto mode (the longer the engine runs the longer the shut down time is) i just have mine set at 3 mins or on 10 if its a hot day and i am gong in to a shop for a few mins so when i come out the AC is still going.
when you work hard you get sweaty, you dont want to go to bed sweaty so you take some time to relax
unless youre a animal and go to bed still sweaty and and in work boots lol
@@user-ie4kp7ni9d I ain't ashamed to say I've done it lol 16hr days and 5hrs of sleep will.do that to ya
@@user-ie4kp7ni9d you working in the oilfield?
In the Army we had so many problems with the turbos getting coked up from running hard and just shutting off right away.
Still do here at Carson
@@robertphillips3154 I couldn't get anyone to actually PMCS anything let alone read a 10 manual for the truck.... And guess who was the first one to be blamed for the issues lol!
🤔
I guess it doesn't matter when you're not paying the repair bill.
6.5l's?
When I would shut down in the evening I took it easy on the truck before stopping. After parking it I let it idle during my walk around to cool down. I always loved the guys that reved the engine up and than shut it down. They just spooled the turbo up and than stopped the oil flow to lubricate it. I owned the truck and wasn’t just a steering wheel holder.
If you got no skin in the game. You could care less about the truck.
I cringe every time I see that. You can actually hear the turbo continue to spin with no oil going to it.
I have a 1983 280zx turbo and for the last 35 years I let it idle for 5 minutes after a long run because of the turbo. No turbo problems yet.
@@hudsonhawk0016 I let my 2nd gen ram cummins sit at idle for a minute before turning it off and the turbo still spins for about 5 - 10 seconds after, I always wondered how much oil gets pushed out of the journal bearings in that time, nothing more I can do about it anyway. I will admit that it does sound kind of cool lol
FINALLY, someone who could explain the reasons for cool down periods even though it was something I always did on the farm. I've been asked before but no direct answer to give. I felt like the guy in the destruction of the week.😱
Your knowledge at your age is explicit and well appreciated. I can see why you get promoted. Good job!
Agreed, I see so many people on UA-cam that don’t let their engine cool down🤦♂️
It’s so you don’t coke the turbo bearings
Turbo timers work. Even a turbo gas engine needs to spool down. From a retired mopar flat rate dealership tech. I replaced a lot of turbos due this especially the garrets.
I always have a 5min cool down on my TFSI. Can’t believe this isn’t common knowledge.
Great tips here to help no matter what diesel engine you have last much longer. Install a pyrometer if you don't have one...they're engine life savers for letting you know when to dial back when the engine is under heavy load.
Got yourself a new subscriber. 15yrs ago when I was in the rice fields, boss man was big on letting the tractors idle for 8-10 minutes. We worked them hard, small time farmer. Old Versatile had 14,000hrs on it with no major engine repairs when it got sold to South America. My old 12v I let idle for bout 20 seconds or so. But I have a long driveway I idle down in 3rd gear getting to the house. And she ain't my tow pig.
First the Goat was wonderful. I shut my 3406E down only after the pyro gets to 300 never before. Keep up the great work I enjoy your videos
My engine cool down I made a habit before shut down of engaging the fan with the switch on the dash and let the engine idle for at least 5 to 10 min especially throughout the hot summer days and you explain that very well with the heat that is created via the turbo
I have two diesel generators, a Kubota and a Deutz. Neither have turbochargers but I have always allowed them to cool down for about three to five minutes after removing the load. It's just the sensible thing to do, and costs only pennies.
One other thing, if you have hot spots that are close to boiling, those areas will scale up if there's any minerals in your cooling system, and if scale buildup occurs then it insulates those areas from the coolant which in turn lets them get hotter and could cause damage. That is also why you don't use tap water to mix with your antifreeze.
All new cat machines have a engine delayed shutdown after hard load so this makes perfect sense , amazing video I enjoy watching your videos sir
Thanks for the explanation!! Several months ago as a newbie, my C7 overheated and stupid me shut it off. Luckily, I took my head out of my *ss and re-started and watched the temp go down. Learned a lot that day and this confirms I got lucky. No major issues thankfully. Great video as always!!
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit...
Now you have 175,AND1 subscribers, on a more serious note. Good down to earth explanation of what we should do to cool the engine down at the end of a haul...
Thanks -Nicely done Josh well presented & explained . Down here in Southwest TX. heat is a much bigger factor than the cold . I tend to "high idle" ( 700-1000 rpm) my Cats
for 15 to 20 minutes then slow idle 400-500 rpm for another 3-5 minutes . This is on a day w/ ambient air temperature @ or above 110 degrees & heavy loaded .
In the early and mid 00s I drove a UD 2600 and the manual said to idle the engine for 2 minutes to let the turbo slow down before shutting down which obviously kills oil flow. We also had a GMC badged Isuzu (both trucks 26K lbs GVRW) with the Cat 3126 and I figured the same principle applied so I did the same with it, and I explained this to my supervisor and he instructed all the other drivers to do the same.
All correct and explained very well what I can add to what you are saying that operators standing waiting with a stopwatch waiting to cool of for a given amount of time seldom works. But a bit of forward thinking and change of behaviour can also give equal rewards . For argument sake racing up a highway straight into to park then standing and waiting can make an operator impatient and just shutoff the engine. Or simply ease of early on the throttle pedal before arriving at a rest area and steadily negotiating your way into a parking area has dual rewards of being able to arrive and park safely and also adds to your cooling of your engine. As I try to explain to machine operators when bringing a machine back to the compound run the machine back in shut the throttle down and park carefully then set to idle put your helmet and jacket on roll a cigarette then before you get out of the cad shut the engine down. I find I have better success trying to change behaviour than just telling some body to sit and wait as some guys will but most won’t.
Great videos and great content best of luck for the future.
Always a great Presentation, thanks !
I was always told to let any turbocharged diesel idle for 5-10 minutes after a full day of running the truck and always have. The reason I've always gotten is the turbo and it's shaft bearings will be so hot if you just shut it off it'll actually bake the oil into sludge because it's no longer flowing, just sitting there baking. Glad to see this is actually true.
I seen turbos blow oil from not letting them cool down
Good video. I always knew to let the engine cool for 5 minutes because during my cdl driving test the instructor got on me for shutting down immediately and explained how scalding hot the turbo is and how the oil will leave a residue on the bearings. I use that 5 minutes to do paperwork and or fuel the truck for the next day. Depending on if I'm over the road or local. 5 minutes is a blink in trucking.
If I can help it, I let any engine I use cool down a bit before I shut it off, more so when a turbo is in the mix. My roommate's have had zero turbo issues with their 2011 1.4 turbo Chevrolet Cruze because they, and myself, let the car cool down a bit after the car has been driven. I have seen with my own eyes, just how terrible it is for a turbo to not be cooled down first before shutting off an engine. Saw a lot of dead turbochargers at the VW dealership I worked for, both for gas and diesel engines, because people drive their vehicles hard and shut them off as soon as they get where ever they are going.
Im glad I saw this. I always cool down the engine. I was told turbos go out around 700k to 800k.I had C15 NSX, original turbos started to leak oil at exactly a million miles. I always took my truck to Cat, I never would let Freightliner touch my engine, the tech at Cat almost fell backwards when I told him the truck had original turbos. I never babied my truck she was always running 70-75. Take you for your information!
glad to see you're back; great content
What I would like to see is a three part series. Explaining to your audience Hydro-mechanical timing advance and how it works and why you leave those screws alone up front. Mechanical governors and how they work. Lastly the main fuel pump on a NSFS and how it works, and the importance of those little clamps and brackets on those fuel injection lines.
I totally agree with this. It is somewhat confusing in a highway engine due to the fact that some engines actually have a lower coolant temperature while driving. If you notice your fan will kick on at say 210 and you tool down the road at maybe 190. You pull in to the yard and idle and your temp gauge actually rises. This has been a discussion of mine with operators that just shut down. So the way I word it is to let temps stabilize and if you have a pyro let it fall off. Tell guys why they should warm up is a totally different argument. I tell them that being a mechanic helps me understand and see in my mind all the things inside an engine that can go wrong. You sure can tell the difference between someone that knows and don't know when you start breaking into an engine
Cool down makes sense.... When I'm towing with the Dodge, there's a pass I often go over with a nice place at the top to stop n pee. The thought of oil n coolant not moving through a smoking hot engine n turbo was not to be considered. Plus, I kind of dig how well the truck tows and run at a nice clip, watching boost and other gauges, enjoying the engine take it like a boss.
YES...helps avoid heat soaking the oil to turbo bearings and other critical components.
I started doing this with my 5.9 Cummins after high speeds or loaded trips and I’ve noticed the difference. Engine does run smoother and feels more confident when I let it “cool” down
Awesome information, thanks for sharing again. Now I know way my diesel engine was such a bad failure, I was driving it like a petrol.
So I guess when I pull off of the highway and screw around getting to a camp site or to my storage place I've probably done enough low load running where the engine should be cooled down, but I'll make sure and check. Keep the good stuff coming.
Very interesting. We live in Idaho. So we get a bit of North Dakota (for like 10min a year) and a bit of Arizona for a tad longer. This was very helpful!
Glad I found this. I’m new to the trucking game and came from being a gas tech. I would have never known to do this. Luckily I’ve only put 30k on my truck since I’ve got it. Sitting at 180k
Ive always practice this, get the temp down to idling temperature before shutting down.
Great video👍 I always wished I could get my guys to understand this when I was still doing construction work
i forgot what i was driving as a kid i think it was the old Ford 946 our neighbor let us borrow but i remember on the dash it had a warning label that said to let the engine cool down and if the engine stops while under load to try and start it again and let it idle to avoid damage. IMO if its got a turbo it should have a turbo timer better safe then sorry also its handy for hot days and your going in to a servo or corner store for a few mins you can set the timer to its highest setting my one can go up to 10 mins and it keeps the AC running. timers seem to have bean mostly forgotten i have so many people ask why my land cruiser is still running after i get out and walk away I've even had a truckie ask me that do modern truck not come with a turbo timers any more? i remember it being standard.
Greetings from the Philippines. My car is a Mitsubishi equipped with a 4N15 Turbodiesel engine. I always idle the engine for about 2 - 3 minutes before shutdown, especially after highway driving. I also change the engine oil every 6 months or 5,000 kms. Thank you for the information concerning engine cooldown before shutdown.
I always idle my turbo diesel car/SUVs for 2 mins before shut down. Good practice for longevity
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit...
For a typical trucker, this is easier than it sounds. I monitor EGT, coolant temperature, water temperature and transmission fluid temperatures electronically. In summer heat when I've been pulling heavy or large wind resistance loads is when my temperatures are the highest. Just idling while fueling for 10 - 15 minutes and my temps are back to normal. So when a truck slowly makes it's way into a truck stop, finds a parking spot and jockeys into position, the engine is barely working the whole time and by time you set your brakes and log yourself on duty to do your post trip inspection your temps are pretty much cooled down to normal. Me personally, I like to fuel up before shutting it down for the night but that depends on the fuel aisle and parking situation also. Point being, you won't have to idle very long after parking. Maybe by time you check your lights, tires, load and look for leaks on the engine you can shut it down.
Basically when the engine is shut down all lube and cooling stops apart from the ability of coolant to superheat around the valves which is very effective at cooling actually. Yes it can eventually cause cavitation/errosion. Turbo on a hot sudden;y stopped engine keeps turning for about 30 seconds, effectively without lube and when it does stop the extreme heat may well bake and caramelise as you indicate. I've seen abused engines in motorway/highway truck stops start boiling out of the coolant expansion tank cap, starting up to two minutes after the abusive stop without cooling from highway loads. Thermal stress on rapidly contracting components such as exhaust manifolds and heads/head gaskets can cause fairly rapid and severe damage as well.
As a rule of thumb a hot engine under load should only ever be shut down suddenly for one reason. That is when the oil pressure warning light comes on. It then becomes an issue of damage limitation. A sudden engine stop is likely to cause less damage than running the engine for a few seconds longer to allow it to cool down. A few seconds running with no oil pressure will undoubtedly cause a major overhaul at best. At worse, a rod out the side.
Turbo timers should be factory install.
Less revenue for dealers
@@tupapisoyyo676 keeping your engine lasting as long as possible is counteractive to their buisness.
Great info. Thanks for sharing!
Good topic. This also applies to ANY equipment with a turbocharger (needs an idle cool-down), but it's also a good idea to shut down electrical loads in the last few minutes on any vehicle to let the battery recover, and let the A/C system normalize, so condensation doesn't form in the ducts after you shut it down.
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit... and while it is idling down the alternator is still working....
Love your spin on diesel engines
As always great information thank you! 👍
While running a Cummins L9 doing highway duty for a heavy RV, I will let it cool down between 3-5 minutes before shutdown (Cummins recommendation) . You can actually watch the temp gauge decrease in temps. Never be in a hurry to destroy your engine.
Even on new diesel engines in a 2500 or 3500, after my 10 mile test drive, I let it idle for a few minutes to let them cool down a bit. Same with turbo gas engines, it allows the coolant to go through the turbo(s) to allow them to cool down.
The manual for my '02 Super Duty specifically recommends idling for at least three minutes after running under a load. I had a Turbo Saver installed when I first bought her and have always used it. I always let my Powersroke idle til my EGT drops to 350 or a bit less. I like to think that and using T6 Rotella have helped avoid coking and turbo failure for the 21 years and 278k miles she has in her. The Turbo Saver lets me set idle time from 1 to 13 minutes. Works great.
i run rotella T4 in summer seasons. and rotella t6 in winter season. on my 6.0 powerstroke. i dont have a turbo timer but let it cool at idle for 2-3 minutes. i love the truck enough to sit in it at idle for a few minutes. the area i live at though if im not towing its about a 5-10 minute drive to my house in my neighborhood with 15~ mph speed limit its roughly 1000 RPM unloaded. so reduced cooldown time idk maybe 1 minute at most.
Exactly! What Josh said! Shame is, newer trucks don't have the guages to monitor all these temps. That's why I had a 96 Pete 379. Thx for the videos. Good job
Modern engines may well have safety systems built in. There are many engines now that have electric coolant pumps that circulate coolant after engine shut-down, not only through the block and head but also through the turbo bearings. Some may even have similar auxiliary oil pumps that essentially do a similar job, mainly through turbo bearings, especially on engines that have dreadful stop/start systems fitted.
It is quite amazing that so many people seem not to know the regime for both cold starting or hot stopping engines, especially turbocharged engines whether diesel or gas. Every turbo diesel vehicle I've ever owned has this information in the driver's manual, admittedly not always as prominently as I believe it should be. But it is usually there in black and white.
Which engines have these electric pumps?
@@jaredmayer3960
My last Volvo XC90 diesel and my current Kia Sorento diesel certainly have these pumps for the turbo[s]. Pumps generally are going electric on state of the art engines and even automatic transmissions. The Kia/Hyundai wet clutch DCT [another growing trend in cars tractors and trucks] has two electric pumps, one for the wet clutches and one for the mechatronics.
I forgot, the Volvo and Honda have twin turbochargers and the Honda also has a turbo cooling system, although I'm unsure about an electric coolant pump on this one. More and more cooling systems are getting very complex with ECU controlled valves in the system, as well as the traditional wax thermostats, to restrict cooling to certain areas or increase as demanded, for quick warming and least energy loss.
Another great video! Thank you!
Number 1 on the list speaks to intake air with corrosive contents. I just think about the clowns with big sport fish boats. They run them wide open out to a fishing spot then shut the engines down and drift. Then they bitch that the turbos are junk when the salt air and heat trashes them out prematurely. Great video as always.
A pyrometer is very useful for judging when to let the engine cool down.I always found that letting the truck coast to a stop and running in low range to find a parking spot was sufficient.
Let the temp even-out as much as realistically possible, avoid hot spots, thats the idea.
Great topic. Thanks!
progress rail needs to follow CAT's advise. the model SD70 locomotives have auto shutdown to "save fuel" that shutdown the prime mover only 30 seconds after the unit on the train has stopped no matter how hard it had been running! of course this keeps the turbo company in big money.
Great information from a great caterpillar expert 👏
Thank you.
Thank you! Good advise!
Your videos should be included along with all the safety and diversity videos some of us have to complete at work. Some guys just don’t know the basics even though they’ve been driving a long time.
Great video. Thanks
I was pulling a heavy load with a gasoline engine and the temp gauge was reading normal to a little high. When I stopped for fuel and shut the engine off, I could hear gurgling in the overflow tank. I checked the temp gauge and now it was pegged to the hot side. I immediately restarted the engine to get the coolant and oil circulating again and it moved back to the needle went back to the middle/normal position.
After that experience, I never shut down an engine if it has been working hard. I give it a few minutes to vent off excess heat.
i love that hat! i always let my 7.3 idle for a few min before shut dwn another great video bud and happy new year
I think I'm going to add it to the rotation.
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit...
Nice overview of this.
Another very informative video..Good stuff, and i appreciate it..Thanks..B
Thats why the big diesel engines in trains and ships have pumps that run oil through the turbo for 30 minutes after shutdown
I had a 93 Dodge/Cummins for 20 years. I set the pyrometer probe after the turbo which will always read cooler than pre-turbo. It never hit more than 750d under load and my practice was to let it cool to 300d before shutdown. I now have a 2012 RAM/Cummins and set the pyrometer probe post turbo. It reads well over 1000d just pulling a grade unloaded. I couldn’t find any shutdown information and so settled on 400d. I can tell you from years of experience running these trucks as well as diesel boats that you can idle them till the cows come home and you won’t get much of a reading on the pyrometer and the coolant isn’t much quicker. The engine needs a load for both the exhaust gas and coolant temperatures to rise. A Cummins engineer told me fire the engines up and idle out of the harbor than gradually bring up the speed. Going back in under idle will cool everything off just fine.
Thank u for another great video
Sir, I would like to thank you for the publications sir. I have a Taurus tractor engine with a malfunctioning C9 engine valve. I set the valves when I started the engine; It is no longer the same in the rotary engine and slows down a lot when turned on
This is exactly why I'm becoming a diesel mechanic before getting on the road in a big truck.
I heard about a guy quoted $20,000 for an engine repair and he was actually considering doing it!
That time and money is much better spent learning the trade before getting on the road.
It's a safety issue for you, other drivers, and also the people you're delivering goods for as well.
If we don't know the condition of our rig, how the hell can we guarantee that it's going to reach it's destination??
Yes! I always stress this to my customers as well with their equipment. When I pull up to the house at the end of the day, I let the service truck idle a good 15-20 minutes while I do paperwork and check things over for my post trip.
How are you liking SIS 2.0? I work for a deere dealer so I am partial to their system. But we do a fair bit of cat work also. And I think 2.0 is a nice change and a little easier on the eyes.
Hi I’m a big fan of your channel love it !!!! Thank you just want you know I’ve learned a lot
That you for the comment.
AS ALWAYS A WELL MADE VIDEO EXPLAINING WHY N WHY NOT..
Good job on the video.
Turbo charger failure was a big problem in the little Chrysler 2.2L engine from the 80s for this very reason. They were great engines even when you pushed them too the limit,but you had to take care of them.
Thanks for another one!!! Still laughing from the scream🤪👍🤟
Yes! Awesome scream. That's probably what I would have done.
Been a trucker for over 20 years....my grandfather was a diesel mechanic so I was told...15 minutes to cool off and about 45 minutes to an hour for warm up....and I haven't ruined an engine yet for cavitation or turbos going out ...knock on wood
The engine also has static heat. My 6.7 cummins heats up from 195 to 210 just sitting after shutdown
That is due to those hot spots transferring their heat to the coolant without it flowing anymore. That is how cooling systems work. You have noticed a very important part of how thermodynamics works. Few people notice that. When a system is operating the hot parts are several degrees hotter than the coolant and thus transfer heat from hot to cold, or high temperature to slightly lower temperature. But when the coolant flow stops, the temperatures will equalize and heat the coolant more than when it's flowing. This is also important because you can then understand that the inside of the cylinder walls is much hotter than the side of the cylinder walls that are in contact with the coolant in the water jacket.
Let's see...cold starts, hot shutdowns, Heui pumps, exhaust gas temps...maybe I should have been taking notes. Another great video from the master of Cats.
Made it to 2021 Larry!
Josh that was a good find on the turbo, you know within a few days the turbo may have went out and they would’ve tried to blame that on the overhead work.
Here in Australia we have turbo timers. Whack it in neutral hand brake on and turn off the ignition. Engine will keep going at idle until the timer shuts the engine down.
Yes it needs to cool down, the red hot turbo needs cool oil to cool It down otherwise it will carbonise the oil left sitting in the turbo when it is shut off straight away without cooling, you should always warm a turbo Diesel engine too. I always put the cabin blower on full hot for 3-5 minutes before shutting off to draw out some heat..
Get off the motorway, get parked, finish swearing, stretch. look at all gauges blankly, collect bits and bobs, write down whatever you have to, sit back and relax for a moment, guess how long you’ve been parked, give it a minute for luck, turn off engine. When I was young that meant pull up the stop button, again and again ! it was amazing how many stop buttons got hurled out of lorry windows.
Very helpful thanks
Thanks for you sharing your knowledge
I always idle or drive slow for about 10 minutes after driving fast before turning it off.
Sounds like you are doing it correctly there.
With trucks, most of the time the cooldown is built into the driving pattern. One exception might be something like a rest stop at the top of a hill, where you can go from a hard pull to a stop.
When start should allow idle until oil temp 100 or higher?
Benefits to engine block heater as high as 45 or 50 degrees? How long heater block?
Same, my driveway is 1/4 mile down hill with a slight slope, I don’t have a turbo, but I still let my idi cool down for about 2-3minutes. I never truly work my idi that hard, but I always start the truck & let it warm up for 5-10minutes before driving away depending on how cold it is, the 83-94 7.3idis or non turbo engines need more warm up time, this is because when it’s cold it needs a few minutes to get the oil warm, then a few high idle moments to get the heat up, so it runs better.
My previous 95 7.3 PSD was always warm by the time I got up my 1/4 mile up hill driveway, I can tell when it lugs down & accelerates slightly.
Good video. Cat is the diesel engine builder.
Some older Peterbilts have a shutdown timer on them. It was just a timer style timer. You set the timer and instead of a ding, it shut off.
My 97 379 has one turn the dial. Pull the key and walk away she'll shut off on her own. I drove an 08 glider freighshaker classic with a 6nz that also had one.
My old Dodge has one of these. Its a mechanical fuel system and the timer basically passes 12 volts to the fuel solenoid so it stays open after you turn the key off. Time runs out, voltage goes away, fuel cuts off.
Paccar trucks still have that. I drive a t680 now drove a pete 579 and a t660 all of them had it.
Kysor used to make an aftermarket shut-down system for any truck. The only one I ever saw gave 5 minutes after the system was activated and the key turned off, though I think it was adjustable.
True
Great video
When I'm a few minutes from my destination and I know I'll be shutting the engine off I try to run the fan in manual mode and I'll stay a half/full gear down where I would normally be. This typically gets me pretty close to the base idle temperature for coolant and oil without having to idle much at all.
The inlet end of the turbo shaft is frozen from air being vacuumed near it.
The heat transfer from the hot side to the cold side of the turbo shaft is significant.
As a farmer I let them cool down but with our semi's during harvest we don't have time to let it cool down as we have to get out of one truck and directly into another truck. However it's not like we are working them really hard like a tractor or combine
Love your vids keep em comming
First!
I've read owners manuals for 50s era Cat tractors many of that era weren't turboed manual recommends a cool down time the idea was to let the engine normalize.
We had a 600KW cat genset that we used to run our grain dryer. It had one speed wide open. Always felt bad shutting down a screaming engine at night. Usually had at least 10 to 20 minutes of light to no load as I shut off fans.
I always let it run 5mins after shutting the engine down except I've a light cruise for at least 10mins before shutting down then I just let it run an additional minute. :) - Great vid o/
Turbo timers...set and forget. automatically idles engine after "key off and out" for 1, 3 or 5 minutes (selectable) and that's for a cheap unit...
Heh Josh! Love your informative videos. Keep them coming. Quick question.... I see so many new machines on lowboys these days without the exhaust covered. I was always instructed to cover the exhaust while low bedding a machine, to protect the turbo from spinning with no lube pressure. Thoughts please, thank-you.
It's in a freightliner owner manual. Let it idle couple or 3 minutes before turning it off. Often I see the temperature gauge drop 8 to 15 degrees/ oil gets to circulate and cool down and not cook the engine. I even apply it to all semi trucks I been driving since I read that
A decent number of trucks use the fuel to also cool the injection pumps and control circuitry on said pumps (like the 24v cummins).
same for some gas engines too. once i shut off my 95 f150 i6 after a long pull up a hill, started getting hot and missed for a few seconds after restarting.
Great info Josh
If you’ve been going up on a steep grade for a mile or more, you don’t want to shut down the engine right after the grade. The water temperature will continue moving up and getting cooled by the fan for the next 15 minutes or so after the upgrade. If you don’t do this and shut off the engine right after a steep upgrade, you’ll notice that the water temperature is maxed out on the gauge next time you turn on your engine. This can damage gaskets, o-rings, hoses, etc.