Quote:
Originally Posted by HawkeyeGeoff
Cold starts are the most wear on the engine...the longer you have it in that cold state the more wear that happens; idling takes significantly longer to warm up and engine than driving. It's a matter of oil flow not load.
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I've actually timed both, and found that it(2010 335i w/oil cooler) does not warm up faster while driving. It actually takes right about the same amount of time. With that said, I'll continue to let my car idle until the oil temp gauge starts to move before driving off. At the bare minimum, and if I'm in a hurry, I wait until the oil level sensor reports all is good, which takes a minute or two.