Quote:
Originally Posted by RoshDawg
Something interesting, Porsche (at least on the 991) runs temps of 210-220 for oil when in normal mode to reduce emissions and in turn (I think) increase gas mileage. When selecting sport, oil temp goes down to 180.
Higher oil temp apparently has something to do with emissions.
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From what I have read about some of the MPG contests, higher engine temps = better MPG. Something to do with keeping the combustion gases as hot as possible while in the cylinder for maximum efficiency. IIRC, ∆T and heat loss rate were thrown in there.