Has anyone used Joe Gibbs DRIVEN oil XP1, XP2 or KRT in a 211cc KX21 Subaru motor pushing about 10hp, max revs about 6200rpm?......the oils that people are recommending, seem way too thick, those being semi-synthetic 10W30 and 10W40......surely they will be like honey and really sap power and lap time?.......or does the subaru motor perhaps have a unique oil requirement?
Gibbs oil in a Subaru KX21?
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