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Have you ever had a motor apart that runs it i have about 30 of them every one with the same problem over heated blown bearings. Synthetic oils suck for the average rider they have no protection from water when engines sit for extended periods of time why waste your money. you'll never notice a difference from regular oils to sythetic in a stock sled.skidoo mineral oil is the best oil out there and the cheapest for ves sleds and it has better numbers on a dyno than any synthetic.and just because there a sponsor doesn't mean they use it if you ever raced you would know that
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