Quote:
Originally Posted by WickedBMW
I thought it was the other way around, 0-30 as primary and 0-40 as an alternative. I had a recent oil change at a BMW dealership, and they filled my car with 0-30
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I think in the US 30 is the primary. Here in Taiwan 30 is also the primary, dealer doesn't carry 40 at all. But in Europe many uses 40.
However 30 or 40 I don't think it makes much difference.