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Reply to "5w20 vs 5w30"

old farmer ,

API SM 5w-30's , the better one's anyway are very very close to having the same cold weather pumpability and pour point as the previous SL 5w-20's had .

Most of the SM 5w-30's are very good oils . Some are even better Smile I have no problem using certain 5w-30wts in my own Duratech V-6 .
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