Quote:
Originally Posted by RunningStrong
Do any of the more hardcore modders run a different winter engine oil?
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I run the same "weight" of oil year round.
But you could make the argument that a synthetic oil of a given weight may help slightly if you live where the winters are very cold (because synth has viscosity stability - so, less internal friction/pumping losses afer a cold start-up). In the hot summer, though, there's probably no fuel economy benefit to running synthetic.