Quote:
Originally Posted by JerryP
I agree, especially since my 2014 Yamaha manual specifically states the recommended oil as “YAMALUBE 4-cycle oil or SAE 10W30”. No mention of Synthetic oil.
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Naturally the Yamaha manual going to recommend yamalube, as far as I know Yamaha don't refine crude oil? Probably shell, Mobil, or any other leading refinery. But, they get to add their Name, dictate the specifications, and up the price. IMO yamalube will get just as dirty with containments as other leading brands. So, if you don't change and check it regularly (regularly matter of opinion??) it will wear out just the same with yamalube.