I'm new to diesels and have just gone back to classic cars with my 85 300d, so was wondering what you guys do for a warm-up on your cars. If its really cold out (for Atlanta, say below 40f) I let the car idle for a minute or two before leaving... any warmer I just fire it up and go. I am very gentle on the accelerator until the temp gauge starts to move, then I keep it to about 1/2 throttle till it hits 80c. BTW this is without a block heater.

If its 35 or below I will start it, wait for maybe 30 seconds to a minute....and then go. I try to be gentle on the throttle until it reaches about 60C or so....then I drive normally.

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-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Wait for ~30 seconds then drive, no matter how low the temperature is.

I wait til the oil pressure comes up and go. If it is really cold I will wait for maybe one minute for the oil to warm a bit.

I will wait to use full throttle until it is fairly warm.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

I do what the manual says: drive it. Idling is not good for a diesel (or any engine), so driving it easy as it warms up is going to be the best thing. If you have a block heater and electricity available, that of course will be better, many of us plug into a timer to heat it an hour or so before our morning commute.

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Gone to the dark side

- Jeff

some barry white, dim lights, wax, wine.

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1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

I usually start her up come back in the house for a bit, get the wife going, sometimes she gets me going. then off we go. we have a mile or so of down hill. then 2 1/2 miles to the freeway with 4 stop lights/signs. by the time we hit the freeway we are up to operating temp.
If it`s icy/frosty on the windows, she idles til it melts. summer time maybe a minute.

If ya gota job. start er up an hit it. Ur half way to work and the starter motor is just winding down. afraid to breath too hard or the inside glass fogs up.

All depends, ideal conditions or panic mode.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

I just wait until it's running smoothly and then drive off gently. If it's cold enough out to need extra warm-up time, at least if it's mine, it starts up sounding fairly rough. When it smooths out a bit, it's ready to go.

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

In GA you can start and go.

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82 300D....went to MB heaven
90 350 SDL....excercising con rods

if the sdl is rough at startup, then some glow plugs are out...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

I live in No VA. When it is under 50 degrees I let it warm up for a few minutes. Otherwise if I don't the car has hardly any power. It's like it's got build up some steam or something to get going in the cold mornings.

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1985 Mercedes Benz 300SD, TMU
2015 Chrysler 200S

I didn't know that. I usually start pop outside, start er up, lock the doors in case she decides to drive away by herself and then pop back inside for breakfast. After about 10-15 mins, I pop back outside and she's up to about 40 degrees and ready to roll. By the time I hit the highway, she's just about 80 and I (feel) like I can safely rev 'er up to 2000 rpms and above.

I always figured its not a good thing to nail an engine when its all cold. Maybe I don't know enough about the inner workings of an engine, but it seems like if the temp gauge shows its not even 40 degrees yet (I presume Centigrade) one could do some damage by running it hard.

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1987 300TD
1984 300D
755,000 KM and going strong
BC Canada

If idling isn't good for an diesel engine why do semis idle for many many hours while the drivers sleep.

As for warming up, if I don't let mine sit at idle for 15 mins or so then it's really slow when I try to move it. No power, cold and slow.
Mine is happier with a nice long warm up idle.

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Ginny in Denver-ish
78 300SD, 265K (mine)

If it's real cold, not very often in Phoenix, I plug it in and let it warm up that way then just start and go. Otherwise I'll just let it idle for a couple of minutes.

It may have no power for the first 300 feet, but that warms it up a lot faster than idling, and then the power is there.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)