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    Amsoil ASL 5W30, 2005 Subaru WRX STi, 5000 miles

    Background: Just a normal driver of my STi, I don't do anything more crazy than vigorous freeway pulls. The first two oil samples were Castrol Syntec 10W40, the latest two are Amsoil ASL 5W30. I screwed up on this sample and managed to only get the last bit of oil out of the sump. Questions...
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