CarbonSteel
Well-Known Member
Irrelevant from the aspect it is not a currently approved API classification from FCA and while it may be updated in the near future, it has not been as of now--and therefore important to note the distinction. In addition, API SN and SN+ oils did not become poor quality or have issues simply because API changed designations.Not irrelevant at all if you want less wear, sludge, piston deposits and oxidative thickening. I sure do!
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