chaseschrecker
New Member
Does it matter what kind of oil I run in the 657x or the 720 motors. I know to run the rotax oil but as far as the synthetic or the regular? Just curious because I bought the synthetic and that is what I have ran since I bought the boat, but next to where you put it in it says not to use ashless oils. And I know the synthetic is a low-ash oil. Any advice would be appreciated.