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Message: <blockquote data-quote="KL2DC" data-source="post: 159173" data-attributes="member: 3452">Glad the owner's manual worked out... Modern Bimmers's engine management takes care of the warming up. Driving off immediately doesn't mean dropping the hammer right out of the driveway...gentle and moderate driving for the first 10 minutes is ideal (check progress with h2O temp gauge). Extended cold idling is wasteful on gas and doesn't warm up the transmission fluids... As a rule of thumb, I always start the car first and then fasten my seatbelt, adjust radio, mirrors etc before I start off. I figure that's enough time for the essential fluids to start circulating. In the e90, they laid out a similar recommendation of not warming up. To make matters worst, we do not have any form of water or oil temp gauge...so there really no way to tell when the engine is warmed up, so I fall back to the 10 min rule.</blockquote>