Originally Posted by jgiljr

I did have some clogging in the crankcase breather hose which I cleaned. I started it again with the polaris 2540086 filter. But at the same time while I was at the dealer getting the filter . The parts guy recommended Yamaha 10-40 oil. I was running 5-30 oil. It seems only to blow the filter when the atv is cold. It has been in the single digits here lately. Maybe the oil is too thick? I have been thinking of running 0-40