are they good, bad, neutral? i have 105K miles and just thought i'd try some, didnt think it would hurt. but then again it burns no oil as it is. and this is a dumb question but the added viscosity of it doesnt hurt performance does it?
RysRed96GT said:are they good, bad, neutral? i have 105K miles and just thought i'd try some, didnt think it would hurt. but then again it burns no oil as it is. and this is a dumb question but the added viscosity of it doesnt hurt performance does it?
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