Does anyone have proof that using oil branded "Harley Davidson" will cause premature wear in their motors? From looking at the voa's and uoa's, alot of non Harley oil's have more or higher numbers of their anti wear ingredients. So why is it that Harley's oil which isn't cheap, has less of certain things and Harley is happy with it?.Could it be Harley knows exactly what their motors need, double that amount and have it made with their name on it? The dealerships sell alot of their oil and you don't hear of mass motor explosions.,,