just got a 99ktm200exc. Never had a ktm before dont know much about them. Just needing to know the crankcase oil to use, and what oil to use in the gas. The dealer said mx2t which i used in my rm and golden spectro gum up the powervalves. he told me to use champion WP2 in the gas. And silkolene med. weight in the crankcase. My local dealer carries neither of these oils. Also what ratios i should run at the preffered oils. The guy before ran WP2 at 14oz./5gals(if you know what ratio that is tell me?) Just give me what you think is best for both oils, and ratios, you think is right for the bike. Also how often do you change in a ktm.