Why 0w-40 and 5w-40?
Nowhere in the manual does it it call for those grades. The manual calls for 10w-40 at 50 degrees F or above and it calls for 10w-30 or 5w-30 under colder temps.
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2002 Boxster Base - Arctic Silver - Tiptronic
2010 Subaru Forester
1980 Ford C-8000 Custom Cab Emergency-One Fire Truck
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"I never lose. I either win or I learn." -Nelson Mandela
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