I CHANGED OIL IN MY 00' WARRIOR. I USED THE NEW CASTROL GO-ATV OIL. EVER SINCE THEN AFTER BIKE GET'S HOT. YOU CAN SMELL A BURNT OIL SMELL. THE OIL IN THE CRANKCASE EVEN HAS A BURNT ODOR. ANYBODY ELSE USED THIS STUFF? CHANGED OIL 3 TIMES BEFORE WITH YAMALUBE, AND NEVER HAD ANY PROBS.