Daves Auto Center and His Advice On Idling To Warm Up A Vehicle - Let's Chat Diesel and Gas!!!

[@2StallGarage]

Rich explains this very well in a long form video vs Dave’s short form video which feels like a one size fits all explanation which we know is not the case, therefore; the push back IMO. Dave and Rich are great assets to the auto community. Merry Christmas!

[@FordBossMe]

Thanks Brother

[@ItsTheCostanza]

Dave fake rebuilds engines

[@Matt-d5v]

Rich who? Im curious. I feel the true answer is it depends on the condition of the motor. Worn bearings wont like being pushed if they arent at operating tempature when you put it under load even if its minor.

[@ricknielson8934]

Dave’s has a D- better business rating

[@mattriley6866]

Plug it in !! Problem solved!

[@aldonco]

That is why I love my old 7.3 diesels. Let it warm up . I refuse to get into a cold truck if I don't have to. Still going stong for over 22 years in tough Buffalo NY cold.

[@johnsteffen2248]

Your 7.3 has an exhaust back pressure valve to closes in cold weather , you can hear it ,sounds different, loved my 2002 F-350 with the 7.3 ,bought it new & had it 19 years ,never worked on it except for some O-rings in the HP oil pump ,bullet proof engines .

[@GregariousAntithesis]

Use a block heater when possible eliminates the issue

[@northerntoyota7584]

I like a warm truck when I get in it. -22 here as I type. Likely let my gas truck idle for at least a 10 minute remote start tomorrow morning. I’ll drive away happily as I have for almost 30 years.

[@Idahoprepper71]

I have been a diesel mechanic for 36 years. The worst thing you can do to these new diesel’s with all these emissions on them is let it idle a lot

[@Grant3758]

So non emissions its not bad for a few minutes and warming up for a couple minutes is good? How about on an modern diesel. Is a couple minutes on a cold winter morning bad in your opinion?

[@ronwest7930]

Years ago we all high-idled big rigs then the companies wanted trucks to idle at low RPM, I figured the low RPM-idled trucks wouldn't last as long. Oil pressure and cylinder wash issues.

[@FordBossMe]

​@@Grant3758Idling a diesel engine for a few minutes is ok it's the excessive Idling that's an issue

[@Grant3758]

@Idahoprepper71 yeah I gotcha. I do see some guys idling them for 20 30 minutes so that makes sense. I'm only ever doing it for 5mins at most on a really cold day.

[@Jeffrey-t8g]

A friend was a long haul trucker 40 years ago and he told me the big rigs wouldn't get warmed up deadheading when they drove from terminal in Atlanta to Tennessee home. Said they needed a load, even an empty trailer was enough, to get the engine hot enough to warm the cab.

[@cyr2795]

Peg knows what's up, redline immediately in -40 lmao

[@michaelpolaski4186]

Right in to the ketchup.. fkn Mint 👌

[@tomedgar4375]

Great advice Boss. Both of my pre smog and DPF equipped diesels idle for a very long time to come up to temperature without load on the engine. After idling for maybe 30 seconds, I would drive off with minimal throttle so that I would not be putting excess fuel in cold cylinders that it couldn’t burn. At 300k miles, my pre smog diesel still had cross hatching on the cylinder walls when I pulled the head for a valve job(broke a valve spring).

[@weshawkins7165]

Good explanation Rich. I start my vehicles, my Diesel included, and let idle a few minutes to let the oil circulate and then off I go.

[@rockyourworld5374]

Dave also talks about it particularly in reference to Diesals. As fuel stacking or loading is at its highest. And if you check out the engines dave works on you will see the crazy amounts of carbon build up that ultimately destroys the engine from idling and poor or lack of maintance . Good work Rich!

[@purebloodiiier]

I turn my truck on , make a pot of coffee, take a shit, watch the weather channel, check traffic...and then get in the Rat Race... LoL

[@FordBossMe]

Ok

[@woodysrockspyro6436]

Hahahhaha I let mine idle that much too. Also put plenty of load on it pretty often. 20,000 + lbs of trailer

[@bearing_aficionado]

Clearly, you're not letting it idle long enough. 😂

[@lobbyrobby]

Is it a 5 minute shit or a 20 minute shit haha

[@ramrider1453]

@@lobbyrobbydepends on how many whiskeys he had..😂

[@marcodarko6941]

Yes Sir. That's how I do it Boss.. start 'er up and let 'er idle down then drive away slowly and don't get on it until it reaches operating temp.

[@godsdozer]

Heavy equipment owner for 35 years........... Old yellow iron, not the new stuff. Crank, fast Idle for 1 or 2 minutes. Start operating the machine without full throttle until water temp comes up to operating temp.

[@Dmdmvt]

You know exactly what your talking about!!!! I literally do the exact same with any diesel I've owned or equipment I operate couple minutes dont beat on her right away

[@Motorsportsgeek]

Get a block heater and oil pan warmer if you are in a cold climate and want things to last

[@fvargas9026]

1 min tops and driving through neighborhood to get onto roads is enough, I agree with Dave and you awesome explanation

[@lucaskowcz8437]

Rich, I just passed 25k on my 2023 Jetta. Did a simple drain and fill on the transmission. Made it marginally smoother yet I have people telling me its a waste of money and overkill. Well they aren't paying for my car and $80 worth of ATF gives me a peace of mind. Hope all well by you. Yes I also follow the rule of driving it off slowly after the high idle drops. Never let the car sit and idle.

[@FleaMarketJohn]

👍

[@FordBossMe]

@@lucaskowcz8437 good deal

[@jenn_madison]

Merry Christmas, FBM and family 🎄Tough year with dad & hope the new baby will bring you all happiness & joy 👼

[@DCSPORTSTER]

Dave video is absolutely right I do the exact same thing for 45 years and never had a problem. I am also a mechanic and I know Dave is right. If you have to warm up your engine up all the time because you’re worried, it’s gonna break or blow a rod. You need a different ride. I don’t like owning vehicles that I drive what’s gonna break on this thing next. I used to work for a trucking company. We had a dodge 2001 with a Cummins motor and it never got warmed up. Start it up and go no time to warm it up. 600,000 plus when they sent it to another yard to get used. I drove Transport’s truck for the same company. They said never warm it up start and go. They never had engine problems. Engine warms up way faster driving. It causes less wear and less oil contamination. And that’s a fact.

[@EvzenKovar-i5p]

Thank you sir. Getting a better understanding of issues like this is why I follow all you guys. Your mission has been accomplished on this one for sure.

[@Lambert_Life]

I agree ! I'll wait until my truck comes off high idle & then go. Until it reaches normal operating temp i try to keep it below 2500 RPM. There's no use letting one run 10 minutes, it just adds extra fuel to the oil.

[@redmesa2975]

I was in a Cummins class years ago. The 6.7 was relatively new. That engine’s ECM was programmed to cut out a couple of cylinders when the temperature is below a certain amount. It’s to facilitate warm up. I drive big trucks, and warm up for 5 minutes or so. Until the temperature gauge starts to come up off 100 degrees.

[@alexmatthews2332]

There's a way to make an early vp44 24v do the same thing I forget how but I've seen it

[@clevejason]

God bless you brother - been with you since day one and happy for your success

[@charliehayes6667]

In the old days of carbureted engines excessive idling was more likely to contaminate oil with fuel due to running rich when cold. Fuel injection fixed that and controlled idle speed. As soon as an engine cranks oil is pumped throughout the oil system and today's higher quality oils can be much thinner facilitating cold start lubrication. The most important thing for engine/ transmission longevity is is taking it easy on the gas pedal until the engine reaches full operation temperature.

[@dieselsoggydog6299]

You did a very good explanation, better that Dave. I'm old enough to remember the days when there was no multi weight oil and good anti freeze. Back then you had to let it idle for enough time to make sure the water was not frozen and the oil was moving. Guess a people still follow that thinking. I always, on these fuel injection gas engines, to let it come off fast idle and then go. My 12v Cummins is a whole different story. Let it idle for 3-5 min depending how cold and go slow. You might get heat out of the heat 10 miles down the road. If its real cold I plug it in.

[@darrelltaylor8026]

Locomotive mechanic here .... during below freezing weather..we would let yard mules idle all winter due to using water instead of antifreeze (antifreeze destroys end bearings & water doesn't).They idle all winter (16 cyl.2 stroke mills)

[@stevenbrooks1243]

Yep especially the older EMD locomotives they were always idling when sitting

[@EGGINFOOLS]

That has nothing to do with new trucks

[@FleaMarketJohn]

I love watching the YT videos of the locomotives starting in freezing weather or the vintage passenger busses. Very different scenario but definitely more education to learn about the differences.

[@darrelltaylor8026]

@@EGGINFOOLS good point...l was bored .. chairman of the bored

[@darrelltaylor8026]

@@EGGINFOOLS that's my point... the more they add to the plumbing.. the easier it is to stop up the drain

[@kerrylewis2581]

Same here. Start the vehicle, wait for idle to drop, and drive off easily. My wife doesn't like to wait so I asked that she go easy for the first few minutes.

[@johng.4959]

...Wife also dislikes added car repairs... Many women don't get "it".... Mine included. 🤨

[@FordBossMe]

Sounds like a good plan to me.

[@gregcampbell3064]

Living about 600 miles north of you your logic is correct on today's EFI/GDI engines. The best way to get to normal operating temperature after a minute or so of idling is to drive the vehicle under a load. It is important to idle some at our often -0*F temperatures to get the oil moving and properly lubricating engine internals. Then drive easy just like Rich says, which is spot on. Great video and very good explanation of how things function inside our engines.

[@mikemorse8592]

Heavy truck mechanic , idling a diesel is another thing that was done as a necessity years ago that people now think IS a necessity now. 40 years ago before apu’s drivers had to idle the engine to stay comfortable in the sleeper. It can be necessary to idle to keep fuel from gelling in extreme climates. Or it would be necessary to idle because older fuel systems could be difficult to start when very cold. At no point was it necessary to idle for the the health of the engine period. As ford boss stated low cylinder temps and pressures would cause fuel dilution. Rod and main bearing rolls would be common between overhauls because of the wear from dilution. DPF and SCR systems compound the problem with idling. Low cylinder temps inevitably means unburned fuel and soot. The dpf is nothing more than a filter made to catch soot no different than air filter catching dirt. To expand on the analogy, a fully loaded truck running hard down the road loads the dpf about as much as an air filter on boat gets loaded with dirt. An idling diesel the dpf is working as hard as an air filter on a combine

[@Bloodbain88]

I've worked on a lot of old diesels. And the manufacturers USE TO install placcards around the dash with important infomation. Such as "In cold weather, engine idle RPM MUST be raised to 1,250 to prevent engine damage!" And another one "Driver MUST idle HOT engine a MINIMUM of 5 minutes before shutdown or turbocharger/exhaust manifold damage could occur." I see so many people now pull off the highway and just instantly shut their diesel off. I cant even tell you how many turbos we replace on the regular. Seems like every truck comes in with low power and has a bad turbo. We'll replace it and always inform the customer to idle the engine a few minutes before shutting it down to let the turbo cool so it'll last a lot longer.

[@dguiley]

I do understand letting the turbos cool on both diesel and gas engines. Also saw some advice about possibly needing to cool the transmission. The example was towing a heavy trailer and coming straight from the highway to a fuel stop and shutting the engine off before the transmission has had time to cool down. I’d never considered that before.

[@Bloodbain88]

@@dguiley That's good advice I didn't even consider the transmissions, although a lot of the trucks I work on are manuals. Well 5 minutes at idle allows the cooling systems to expell a lot of heat. And I have seen some manuals with pumps and oil coolers mounted in front of the radiator.

[@timwelihan5851]

Back in the ancient times, 30-40 years ago some class 8 trucks would have a engine shut down timer on the dash. Looked like a egg timer. Had a knob you turned with numbers up to 15 minutes on it. Park the truck turn the knob to whatever you desired, turn the key off pull the key out, lock the door. Walk away, the truck would shut down when the timer hit zero. Simple times, simple solutions. Unfortunately today everything requires multiple modules, sensors, and a degree in computer science to solve a problem. Welcome to the world of 'progress'. And as you can guess, I'm one of those old farts that prefers simple things in life. (Chuckle)

[@gunztommiegunz]

I let my Jeep warm up to 130 before taking off. It’s gas but a pos 3.6 pentastar. Oil is warm and pressure built up. It’s not really about the engine it’s the transmission fluid for me. It warms all fluids.

[@falcorthewonderdog2758]

In Montana below zero temps you can't 0:48 drive your vehicle with a COLD windshield. Doing this allows your own breath to fog the windshield. You simply can't drive away in a non warmed up vehicle. You can sit behind your keyboard and complain otherwise but in reality a cold windshield is a death threat as it fogs over as you "just start up and drive away....." Ignore youtube and warm up a few minutes for your own safety. Maybe someday manufacturers will make electric windshield heating elements like Subaru dies ...until then I'll warm up my engine and windshield.

[@joshuathomas6275]

That’s true but it also is true that it’s not good for your vehicle. Both are true at the same time

[@thomasdaum1927]

When you know ( Why ) then you understand !……. Thanks Rich……..

[@LibertyOrD___h]

Good vid, also everyone focuses on the engine but the transmissions also like a minute of warmup to 😊

[@FordBossMe]

Yeah true

[@acornsucks2111]

Ice on the windows, doors perhaps frozen, and windows frozen that won't roll down. It makes a big difference if you are parked inside a garage.

[@FleaMarketJohn]

There are exceptions to the general rule in everything. That's an impossible scenario to just drive off.

[@TXCherokee]

I start my Hemi up and drive slowly thru neighborhood till warned up

[@davidtipton7234]

Cummins actually says to start theirs and immediately rev to 1000 rpm on cold start. In fact on the back of the sun visor of my 98 ram 3500. It tells you to do this. I start mine. Hit the high idle. And hit the exaust brake. Warms it up pretty quick.

[@proudcanadian5713]

Even before following you I have ALWAYS started the car, let it come down a little and then slowly drive until it gets fully warmed up. Even in our coldest days. (Toronto where it normally is -10 -20C (10 -10F)) And it's real simple people, the guys that WORK on your cars won't mislead you. They have ENOUGH work to keep them busy.

[@philliplinkous6393]

Thanks for the video good information I enjoy watching

[@ryans413]

This is why when it’s cold out I plug in my car so the engine block stays warm the oil stays thin the coolant in the block stays warm. So once you start the engine it’s easy and it’s ready to go nice and hot.

[@simd510]

Does block heater warm up engine oil? I thought it just warms coolant and block

[@ryans413]

@ it warms the oil yes and the coolant in the block.

[@rayphillips5436]

It’s called “operating temperature” for a reason folks…….. letting a cold engine run and build a little heat in the cylinders and circulate the thick cold oil is a good thing

[@Andrew-n1v]

Incredible film sir Rich. You are right on the money here

[@fordaeromax]

More wise words from someone that KNOWS!!!🎄🎄🎄🎄🎄🎄🎄🎄

[@glenbenton4855]

The Automotive YT ring is all trying to accomplish one goal, its good to see humble reasonable men with integrity and honesty. Really good information

[@osmannabiyev7587]

I definitely agree with you on this. I also let the vehicle get off high idle. Never like to drive off on high idle. I don’t let the engine idle at all. Always shut it off if I’m not driving only drive thrus I don’t shut it off.

[@genehart261]

I have a 2001 dodge with a Cummins; it honestly takes about 30 minutes to fully warm up in mildly cold weather. I start it up and let it run for about two minutes and drive it easily for awhile. No problems. You can actually tell by the sound when it is fully warmed up.

[@sameold5050]

You may need to replace your thermostat. It could be opening too soon.

[@nickayivor8432]

Dave was 💯 right 😊

[@FordBossMe]

Not 100% but good enough

[@milwaukeeroadjim9253]

I let it idle for a minute or so then take off. My car is garaged so it's warmer than outside. I once tried to let it idle up to operating temperature in very cold weather and it took 20 minutes. Driving the car warms the engine up much faster.

[@TxGuitarPlayer]

Best explanation I’ve heard. Thanks Rich. Merry Christmas and prayers for your Dad and family

[@triple6758]

I was told by a man who started his own successful trucking company in the 1930s to never let a diesel idle if it can be helped. Built his fleet to over 50 trucks at peak. Self contained truck and trailer shops. In house machine shop. Yeah...Im going to take what he told me over you internet people.

[@TerdisLesezchuan]

I was wondering my my explorer ran at like 900-1,000 RPM for a little bit when I started it up for a little bit before going down to 5-600 or so for normal operation. School is in session boys Rich is giving out free knowledge.

[@125AXer]

2001 Chevy truck with the 5.3 LS motor. 80K miles. I got it 2nd hand a couple of years ago, and have put on 20K. I noticed that especially in cold Michigan weather months, if I started and drove without idling for at least 3 or 4 minutes, there was a sound of what I believe to be piston slap. Not severe, and likely only one cylinder. So I let it warm up, and I never hear that.

[@ricklong3218]

I can start my V10 Excursion and after 5 minutes down the road it's pushing warm air out. If I let it sit and run for 10 minutes the snow is EVAPORATING AND STEAMING off the windshield! It was a fleet vehicle, and probably needs valve seals and rings from idling for who knows how long, but at 180k it still pulls my 8,500 lb camper with ZERO problems and barely uses any oil 😊 My wife has a 2018 Pacifica (don't get me started 🙄) and that can sit in the driveway for 15 minutes and not get warm. When you drive it a few minutes, after the initial 5, it warms up WAY faster! Not a big fan of idling vehicles, yes I drive a semi all day 😝

[@jefweb5043]

Yeah but I've done this, this and that and I've never...oh for ef's sake --give it a rest! Rich, thank you again. I think there's a YT video that went into longer explanation... possibly. You always do a great job explaining everything. You have a Merry Christmas, and God's blessings to you and your family.

[@janiceggg185]

Thank you for sharing, Rich and Merry Christmas to all ❤

[@KristopherStidd]

Thank you for the video Richard 👍🏿

[@fastst1]

Heh, the guys in the cold know, you can scrape the ice off, and as soon as you get in the drivers seat, the moisture from your jacket and gloves and breath ice the insides of the windows about a mile down the road. No one size fits all. My gas engine truck builds heat pretty quick, the diesel is a frozen brick even with the block heater, once it gets to 195, it'd dry your eyeballs out.

[@audikid89]

High idle is not for warming up an engine. It is to prevent the engine, while ingesting extremely cold air from having misfires due to an undesirable air fuel ratio. You could increase fuel injector duty cycle instead of increasing RPM during high idle, and it would cause the same effect. The only reason we don’t do it is because it’s a waste of fuel. The reason fuel gets down into the 4:20 because the cold oil can’t properly lubricate the piston rings. This applies to both gas and diesel. Remember, glow plugs make a big difference!

[@cdsfleetrepairs]

In some country's ie Germany you can receive a ticket letting a vehicle excessive idle, being stationed there get in start let idle 3 minutes or less be on your way. Not sure if the laws have changed since early 90s. Good explanation Rich

[@cjg1482]

On my ford 6.7, I would do a slight warm up (a minute or two) until the oil temp is 55*. If not, there is a lot more diesel clatter. On my older 5.2 NPR, a minute or two of warm up reduces the clatter.

[@jdub1139]

Read customer reviews on Dave’s auto center. His customer service is crap.

[@JJD-9403]

That is true

[@ricknielson8934]

D- Better Business rating

[@scanadaze]

The problem I have had with the 10 speed transmissions. If they don't get 100F. They shift hard. Both of mine do. My old 2020 pickup and my 2024 van. I go up to the first mark on the gage before moving. The transmissions give me no problems at that temperature.

[@jasonbrushett2005]

Here in Nova Scotia Canada it was -13C this am.I started my 3.5 Ecoboost f150 and let it run until it came off fast idle,was about 4 mins.Drove nice and slow til up to temp. My 10r80 shifted like crap likr it always does til warmed up

[@462ANIMAL]

I just let it run for 2 mins then drive it easy.. but depends on the temperature , -15.F , I let it run 10 mins or so.. or if it’s all covered in ice and snow.. but I don’t have to wait very long.. my vehicle has a heated windshield where the wipers park.. the other morning it was -24.F feeling like.. I believe that needs time to let idle

[@MacGregor.]

Exactly a few minutes or so, especially in the cold. Kicks down,go and go easy

[@ruckinehround6965]

Hey FBE. My truck lost weight…. I idle it’s on high. Last 6.7 I had lasted me 630k before I replaced the truck with an overweight one….. let’s just say I put it on a strict weight loss program. 225k and no issues at all.

[@lloydstrayer4139]

I live in salt lake City,Utah just south of Logan, Utah where Dave's shop is.ive always started up my car,go out and clean off the snow n ice from the rooftop to the bumpers.then get in and turn on the heater and drive away happy.so far so good with out any problems.

[@schlite60]

I when I start my Cummins 6.7; after oil pressure stabilizes to around 51 PSI. Manually step up the idle to 1000 to 1100 RPM ; then let the engine warm to about 100 degrees. Take off slowly and then i have a few hills to pull to warm up engine.

[@brianczuhai8909]

It wants to heat the ego sensor up as well so it can run it in closed loop fuel at air/fuel stoichiometry on gasoline engines. Diesels no. What about the transmission? You should engage in drive, foot on brake, and idle for a few secs. Or foot on brake and creep. We’re talking 0 or below. And IF you can. That’s where remote start is nice, because it gives you that warm up idle time. And your heated seats then becomes your reward for waiting more.

[@jasonmurdoch9936]

Thanks again buddy another great video Merry Christmas to you and your family

[@dzznuts7580]

I always drive after cold idol kicks down, but keep my rpm's low until it reaches normal operating temp. My dad taught me that when I started driving in 1989 (Gas engine). Part of the reason for that is because a long idol will cause carbon build up in the motor

[@Camera1931-p5v]

Don't try that with heavy equipment!

[@sameold5050]

2:17...yup, 🇨🇦 temperatures are much colder than what many people in the 🇺🇲 are dealing with. Big difference.

[@Blue-moon12]

Saw the video on the Subaru engine etc.that has caused some issues with some people. As for cold starts, I start the car and about 2-3 minutes then I drive off slowly and wait for the engine temp to get up to operating temps.

[@noneOfYourBusinessDotCom]

Thanks, Boss!

[@jamesgetz8945]

I like what you say and do

[@wmc128]

30 seconds is all you need.

[@technolung]

Extended idling comes from the trucking industry. Pickup truck owners think they're driving an old Peterbilt

[@jakel3424]

You always explain it great. Ty.

[@riccochet704]

Old pre-emissions diesel: idle for days if you want. New emissions controlled diesel: don't let it idle.

[@GuretoSefirosu]

Been a while, Rich. I don't idle mine because idling a diesel, as you well know, ruins the oil with diesel, and on top of that is won't heat up! Hope you're doing well. Merry Christmas!

[@CUSTOMWORKS7.3PSD]

I have 13 7.3 diesels in my fleet they all get plugged in they all get warmed up at 1200 rpm's for 15 to 20 min's miles range from 250k to 1.2 million never had a issue BUT my gas denali and f150 start and go like I stole it

[@In2investing]

People will always choose comfort and convenience. They would rather remote start and let it warm up before getting in than get in a cold vehicle and scrape ice. Whether right or wrong its just human nature

[@mikedaugharty5544]

Block heaters are the answer to pre warming things up especially diesels if I had a diesel it would be plugged in anytime it gets to 32° and below you can put them on a timer so they turn on say 3 hours before you wanna leave 4 hours before you wanna leave pretty easy to do I do it on my gas engines so much easier on them starting

[@CharlesCurran-m9p]

Diesels don’t warm up until they’re under load so unless you idle them at high rpm you just burn fuel.

[@ricklong3218]

Let's also at the Godzilla to the list of engines NOT to idle. The variable oil pressure pump drops to less than 10psi at idle. This is part of the reason they came up with for cam and lifter failures. There is a flash for the ecm to up the pressure at idle. THIS is the reason I have not bought one. Plus the F250 I want it in is 90k 🙄

[@chuntzinger677]

I usually start the car with NO accessories on except the electric defroster on the back window - go out, clear the windows, and by then the idle comes down. All the people that turn the heat all the up right when they start the car make the warm up process 10x's longer because they're sucking every bit of heat the engine is trying to make through the HVAC....on really cold days you can get the temp stat off the floor in about two minutes. Then you drive from there - the engine feels much less 'brittle' and hesitations are gone (yeah, I've got old shit). Once you're underway you turn on the heat and because you have rpms flowing coolant through the heater core you warm up much faster in the car. Also, you live in a cold climate? Cloth seats. Them leather seats suck your soul right out when you sit in them in the winter....

[@lanehammer]

Idling in a class 8 14.8 liter DD15 is .75 to 1.20 gallons an hour..It all adds up. Look at fuel prices and wasted idling time. We are taxing ourselves to death. We have anti idling measures like APUs diesel fueled bunk heaters and the APU acts as a block heater.. I always plug my F250 block heater in … Warmup is 3 miles when SD is in the teens.

[@jko0526]

I do a mix. If it’s just me then I jump in and go. If my wife and kids are going with me then she idles for about 10 minutes and it’s left idling at every stop so that they stay warm. I also leave it idle whenever I come home for about 30 seconds to get some fresh oil run through the turbo.

[@fantasticmike946]

What about the 5.7? Should treat that engine the same? (Thank you for explaining this better).

[@hardtruth2039]

My 2018 Ram 2500 stays plugged in. Always warm and ready to go.

[@perryplatypus3713]

I remember the first car I had was equipped with a carburetor. I needed at least 5 minutes to warm it up otherwise it would keep stalling out. Got fed up with that & got something with efi, big difference with warm up times, managed to head out within 3 minutes or less.

[@jonmccormick8683]

-needed a manual (hand pull cable) choke on that carb. The thermal spring chokes could be problematic and picky.

[@sreilly]

Here’s an idea. Do what you want. Warm your vehicle up, or start it up and go. It’s personal preference. I don’t understand why people are getting all annoyed about this. Just be prepared of the result based on the treatment of your vehicle.

[@timblack33]

I always thought the 3126 cats that held the exhaust brake partially on in cold mode was a smart deal. Everything I have that’s diesel also has air. Once the air builds we roll. I take it easy till oil temp comes up. Never had a major issue, never idled for long at all

[@johng.4959]

Excellent video! Thank you.

[@coldnnh6983]

It was 8 this morning, thankfully I park my old 5.9 Cummins in garage and plug truck in every night. Like you say it takes forever to warm up without block heater.

[@SegoMan]

Is your hi idle enabled?. That with a Jake Brake and it only takes a few minutes for the windows to melt.

[@anthonyjulson8840]

With a block heater, should you leave it run all night, or just let it run for a couple hours before you leave? The answer is obvious to me if you're worried about the block freezing.

[@TevynSmith]

Your the reason why I stopped Letting it “warm up” I start it and go no matter the tempature, but I don’t go over 3k rpm until the temp gauge moves a decent amount

[@upnorth5465]

Just like with everything there are exceptions. On a light duty diesel i would agree to some extent. But on hd when there is an option to leave it on high idle it is a different ball park. Our elliot trucks have no option but to idle all day because the buckets run off the pto system. We dont have issues when they are left on high idle and the exhaust stays good and hot.

[@elgroucho7563]

I always tell my woman and kids at minimum wait fir idle to come down and settle before leaving. Snow days start vehicle then scrape windows. My diesel has remote start high idle and will shut down after 15m. Always warm when I come out- we love our vehicles

[@dguiley]

My wife used to have a Suburban with the 6.5 diesel. She drove it with one pedal or the other firmly on the floor at all times. The turbo went out shortly after we divorced. Imagine that. Now I have an ‘07 Duramax with nearly 320k and it still runs great because I keep up on the maintenance and I don’t abuse it. Someone else commented about keeping their RPMs below 2500 till it warms up. It’s rare for me to even do that warmed up.

[@coreybair9426]

I agree 100%. I understood what Dave was getting at when I saw his video, but I knew that other people would take it the wrong way and stir a bunch of shit LoL! He also might have done that on purpose to blow up the comment section.

[@68Charger526]

It's super simple. Start it, left it run for 30-60 seconds and drive off gently. Keep it below 2k rpms for a couple miles and the heat will arrive sooner.