at 65-70/1 ratio how many miles can you drive before your out of oil , or the lite comes onThe factory recommended fuel/oil ration is indeed 50/1 however many sleds are delivered with much richer mixtures. The markings on the oil pump is only a guideline. Doing a fuel-oil usage study is the only way to determine your actual ratio. And the ratio will fluctuate depending on the particular riding style that day. More wide-open throttle, more oil used. Off and on throttle or rail-bed cruising less oil pumped.
I've run my '02 ZR800 at 65-70/1 ratio using Blue Marble since it's second tank of oil. Buddy runs his on Amsoil set at similar ratio. After many thousands of miles neither sled has suffered any oil related problems. The leaner mixture bonuses are clean APV's, less smoke and saved $'s.[/b]