For those that know a job done right is done yourself: the 4T 0W-40 Synthetic Oil Change Kit for Ski-Doo Rotax 600 ACE engines. The kit provides you with everything you need to change the oil of your Ski-Doo yourself. Easy to use, the all-in-one kit includes XPS Synthetic Oil, an oil filter, o-rings and a washer. Tested and designed to improve the performances of your snowmobile, our XPS oils last longer and protect your engine better than other oils.