Another persons expert personal opinion. Here's mine. If you spend over $15,000 for a motorcycle, and ride 4k miles in 10 years, does spending alot on oil save you anything?. If you and your friend both go to the dealer and buy the same bike, and one of you uses regular oil and the other uses synthetic oil, and both ride them for 10 years, who spent the most on maintenance?. Which oil mfgr can prove their oil works the best, on every brand of motorcycle?.,,
