I actually had the same bike for a while. It still runs great but has become a handmedown. As for gas and oil i always run Premium grade fuel with Golden Spectro, seeing as thats what runs best in my bike. People can say what runs well in their bikes, spectro just runs well in mine. Anyway, i would just pull the plug out of the trans case on the right side of the bike, put in a premium grade trans oil, and vwalaa, now you know whats in there. They tend to shift alot nicer and stay a little cooler when youre not leaking shtuff all over either. best o luck