Warm Up?
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Joined: May 2004
Posts: 3,797
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From: Richmond Hill, Ontario
2003 E55 AMG
Its not a question of how much time elapses as much as what temp the oil & coolant are at.
The car operates at full power once the coolant temp reaches 80C.. By that time the engine oil temp is at full operating temp also.
You can "get on it" sooner, but the car will be operating in cold start mode until then. Typicall, I would say wait until you see 4 bars on the coolant gauge before you do WOT blasts.. and until the coolant reaches 80C dont engage in any "racing" as the car is not up to full potential.
The car operates at full power once the coolant temp reaches 80C.. By that time the engine oil temp is at full operating temp also.
You can "get on it" sooner, but the car will be operating in cold start mode until then. Typicall, I would say wait until you see 4 bars on the coolant gauge before you do WOT blasts.. and until the coolant reaches 80C dont engage in any "racing" as the car is not up to full potential.
MBWorld Fanatic!
Joined: Aug 2005
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From: Sugar Land, TX
BMW E39
I've literally idled my car for 18 hours once. Bad for the motor? Probably. Any apparent issues? Nah.
Just look at the cop cars who idle for extended periods of time, they do fine.
And if you wanted to ask, I idled her for 18 hours in stop and go traffic during hurricane evacuation.
Just look at the cop cars who idle for extended periods of time, they do fine.
And if you wanted to ask, I idled her for 18 hours in stop and go traffic during hurricane evacuation.
Former Vendor of MBWorld
Joined: Jul 2006
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From: In a box
W211 E55
How many galllons would you say you burned during this time? I'm curious to see how long I could hold out if a snow drift ate the car.
ON TOPIC: I don't even budge until the car comes out of fast idle. Spirited driving must wait 2-3 miles or until water temp is 4-5 bars.
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Joined: Jun 2006
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From: Bulgaria
CLS55 AMG
i would generally recommend you to drive it calmly for about 3-5 miles.. do not exceed around 3000rpms... after that youre ok
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From: Bulgaria
CLS55 AMG
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Joined: Nov 2009
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From: Queens NY/ Ft Lauderdale FL
W211 E63
I remember my uncle and I got into an argument over how warming up the car for too long is not recommended ( according to his Porsche booklet). He literally starts it up and goes. I don't know about that... But me personally, I start it up, wait for that initial rev drop around 15 secs, and go very gently ( about 2000-3000 rpm). I wait till the Oil temps stops blinking in the cluster (around 80c) and then I start to take the car a bit harder. I try to hit at least 5k once a day to clear those pipes. =)
Last edited by fila0220; Jan 17, 2014 at 10:35 AM.
Super Member
Joined: Nov 2012
Posts: 698
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From: Germany
C215 CL55 AMG, W124 500E, W210 E430, W124 300E
I would like to hear a technical explanation as to why it would be bad for a motor to idle it for a longer period?
Even if the oil is fully warmed up and its viscosity dropped significantly over its cold stage, the oil pressure in every mercedes engine i know of, is enough to lubricaty EVERY part of the engine that needs engine oil lubrication.
Also, idling when warmed up gives AFR 14.7 IIRC, so it isnt bad for the exhaust either...
For the question: I do it as the others, start-up, wait 10-20 seconds and then drive it gently for around 7-10km (~5-7miles) before doing any acceleration near WOT or full WOT.
Even if the oil is fully warmed up and its viscosity dropped significantly over its cold stage, the oil pressure in every mercedes engine i know of, is enough to lubricaty EVERY part of the engine that needs engine oil lubrication.
Also, idling when warmed up gives AFR 14.7 IIRC, so it isnt bad for the exhaust either...
For the question: I do it as the others, start-up, wait 10-20 seconds and then drive it gently for around 7-10km (~5-7miles) before doing any acceleration near WOT or full WOT.
Senior Member
Joined: Jan 2010
Posts: 333
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From: JHB, South Africa
03 E55 AMG
I let mine idle for about 1-2 minutes in the garage every morning then drive it slowly for the next 5-6 minutes until my temp gauge says it is at 90 degrees C.
I have seen guys not warm up and simply spank their cars and wonder why they all smoke on start-up and chew through oil. My 2003 E55 is 10 years old with 110 000km on the clock and has never once smoked and never uses a drop of oil. On a morning start-up my car jumps into life and when the oil gets to where it needs to be after about a minute the rpm's drop from around 1200 to around 900, that's when I know it is ready to be driven. I also cool my car down after multiple hard runs by keeping the engine at low rpm's doing 80-100kmph consistently on a long straight for 1-2 minutes before parking it. I have no technical data to back this up, but I have yet to own a car that smokes or uses oil.
I have seen guys not warm up and simply spank their cars and wonder why they all smoke on start-up and chew through oil. My 2003 E55 is 10 years old with 110 000km on the clock and has never once smoked and never uses a drop of oil. On a morning start-up my car jumps into life and when the oil gets to where it needs to be after about a minute the rpm's drop from around 1200 to around 900, that's when I know it is ready to be driven. I also cool my car down after multiple hard runs by keeping the engine at low rpm's doing 80-100kmph consistently on a long straight for 1-2 minutes before parking it. I have no technical data to back this up, but I have yet to own a car that smokes or uses oil.
