bryant2482 Posted May 8, 2012 Report Share Posted May 8, 2012 whats the best weight for the fs5w71b? is 85-140 to thick? Quote Link to comment
datsunaholic Posted May 8, 2012 Report Share Posted May 8, 2012 No, but fuel economy will suffer. 80W90 GL4 (and ONLY GL4) works just fine. Quote Link to comment
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