Quote:
Originally Posted by X5Jay
It's in your owner's manual. I feel the same way, but I believe the argument is that BMW wants all the fluids to warm up together - engine oil, tranny fluid, diff fluids, etc. That way you won't be tempted to gun a fully warmed up engine with a cold everything else. I'm sure one of the more technical folks on the board (like Adam) can explain it much better than I can. My guess is that you would be just fine w/a remote starter as long as you still take it easy for a bit after you drive off... I'd like to have one myself...
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True comment that all fluids should warm, not just the engine oil. Not letting a car idle when cold is not just a BMW position, it is all manufacturers. The biggest reason is that more wear happens while the engine is cold. With no load on the engine, you are extending the time that the engine operates cold, thus there is more wear every time you go through a cold start cycle. You want to warm it as quickly as possible, without putting enough load on it that you cause accelerated wear due to the low oil temperature. Best advice is to idle until you have oil pressure (several seconds), then drive easily and moderately until all components are warm.
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