I use Mobile 1 Synthetic in all my motors - cars, motorcycles and outboards.

I used to race Superbikes and that was the oil we used in our race motors. The Yamaha 400 superbikes would spin up to 14000 rpm. I have seen how good the motors would look inside after a mid-season teardown and have seen more HP on the dynos. Even after a 8 hour endurance race the motors looked really good inside and did not lose any HP on the dyno.

Damon
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Damon