Quote:
Originally Posted by Sugar Bear
My 104 motor did well on 15w50 synthetic, as it got older I switched to 15w40 C rated dino and had zero problems. Ran very strong until head gasket failed at 360K miles. Either oil will be fine, adjust viscosity though for temperature extremes.
Good luck!!?
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I have heard of people using 15-40 Diesel oil in gas engines, but have never tried it. Should I use the paper oil filter or the polyester?