Quote:
Originally Posted by Red Bread
Just about the worst idea, as undue idling is hard on a car, five minutes of idling is almost certainly not enough time to heat the oil and this will also do nothing for transmission temps.
Just ignoring break in protocol, the best way to warm up a car is to actually drive it. That way the transmission also warms up with the motor. Ideally, you'd rely on an engine oil temperature gauge, not a coolant gauge to determine when it's safe to bring the revs up. This is what recent M cars indicate with the variable redline. Most BMW manuals give you guidelines of what the oil temp should be at before exceeding 4k rpm and redlining.
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That is not what I have said. I said START your car and leave idle for 5 minutes, before you drive away every morning, every night, every time. (specially if u have a turbo engine)
Then, while you are out & about driving casually, when the engine is at nominal, then u can have fun with it, and have no qualms. That doesn't mean take it to the track, or bounce it off the rev-limiter, it just means u need to know when it is ok to step into a fresh engine.