Quicksilver 10W-40 Synthetic Blend Engine Oil is formulated for 4-stroke motorcycle and ATV UTV engines. For motorcycles, ATV UTV engines API SL and JASO MA MA2 certified All-season formula. Suitable for wet clutch applications. Protects engines even in harsh conditions Meets engine and clutch warranty requirements for Japanese motorcycles, ATV and UTV applications that call for 10W-40 engine oil.