Quote:
Originally Posted by ryan@ActiveAutowerke
A word to the wise: It is always better to allow the car to warm up to the quarter mark on the oil temp gauge before driving. Give the M enough time to cycle the oil until the temperature goes up. If you don't you will always have hard or stiff shifts until the car warms up. If you have any service questions, feel free to PM me.
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This is how you ruin your engine!! Warm up at idle??? What BS!
Extra fuel is delivered to the engine when cold causing carbon build up on valves if the car is not driven. How could anyone claiming to be in the service business recommend this. BMW specifically recommends against it.
Porsche had a huge problem with the 993 engines that people allowed to idle when cold. Carbon clogged the injector ports, cause CEL and other issues.