10w40 or 20w50?
Waynes 101 book says 10w40 for colder climates and 20w50 for warmer. Since we have both in Maryland, what should I use. I've always used 10w40 in my sedans.
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Howard
2003 996TT
1993 Mini Cooper
(SOLD) 1974 Datsun 260z, 1997 911, 1988 911
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