I used to run Yamalube,then a couple of years ago,I found some 4 stroke oil at Mills Fleet Farm.It is called Trophy,comes in 10-40 or 20-50,is fully OEM certified in all major bike users for wet clutch use,and is only 1.65 a quart. I know,I'm a cheap a$$,but 2 years and no problems tells me it can't be all bad !!! ( I also use it in my v45 Magna,no problems.)

 

anyone else use amsoil 0w-40???

 

I ran Amsoil in my Prairie 650, but I really didn't have it long enough to say just how good it is. I'm running Yamalube in my Raptor. I think any premium oil will work just fine, as long as you change it on a regular basis, along with the filter. Regular oil changes are far more important than the actual type of oil that you decide on, given that it is a premium oil. Just my opinion.

 

Castrol 10W-40.