Your problem was with air filters right?, because i just buy an KN 152 for my first oil change.
How many miles/km at your first oil change?
I was also wondering about possibly using synthetic oil on the 800. Not sure if it will work ok with the wet clutch.
I do believe that CFMOTO oil is full synthetic. At least it is in Canada anyway?
NO NO NO NO
I CANT STRESS NO ENOUGH!!!
These engines were NOT designed for full synthetic. Wet clutches are NOT DESIGNED for full synthetic! Using a full synthetic will cause your wet clutch to slip!!!
We had an engineer come in some weeks ago when those three engines failed on us and that was one of the first questions we asked: What oil to use?
We were told to either use a good 10w40 conventional or semi-syn wet clutch oil, or use (because its whats recommended in the owners manual) a premium 15w40. We switched out units over to Shell Rotella 15w40. It has the MUCH needed anti-wear additives that these engines need. These engines DO NO utilize rollerbearings on the crank and cam shaft.
Full synthetic is a waste of money on these engines. They arent race engines. They are designed for it. Full synthetic is NOT recommended for use in wet-clutch applications.