Reply to "Oil Analysis on Audi A4 (2.8L) V6"

vickietMember

In industrial lubrication the rule of thumb is that you can go 1 grade of oil higher in viscosity and be okay, but we don't usually recommend going lower. It looks like you substituted a 30 where Audi specified a 40 grade. Is that standard in automotive lubrication?

1/13/045:35 AM

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