Quote:
Originally Posted by wbradley
Funny all the WRX people reported prior to the 2015 their vehicles consumed Mobil 1 and that it was a bad choice for their engines. The word has always been that Rotella (yes, Diesel engine oil) seems to work best for factory boosted Subarus.
For the NA engine, the 0W20 is factory recommended probably due to low viscosity helping improve mileage.
My twin is not winter driven, so heavier viscosity not an issue. Currently using Mobil1 OW20, might switch. Will keep an eye open for your mileage results.
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Sorry I should've been more specific, I was only referring to the FA20 models. But ya that's what I've heard too. Mobil 1 0W-20 AFE is actually pretty good stuff according list as well.