On my 05 I use Valvoline Motorcycle oil and I change every riding season, as well as filter, or 4000 miles. 10W40
The rear pumpkin I believe is 16,000 miles and I use the Yama product, but I have 20,000 on mine and have changed the Pumpkin 3 times. Keep an eye on the clutch and brake fluid and when you change them get Speed Bleeders, they are super and I also use the Valvoline brake fluid product for that.
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