Castrol CRB Multi 15W-40 CK-4 is a multipurpose heavy duty diesel engine oil, designed to provide superior protection.

Conforming to the strict requirements of PC-11 engine oil technology, it can be used in diesel engines where API CK-4,

CJ-4 and below is required. It is engineered to help give long and healthy engine life, giving you peace of mind that your

diesel engines are protected in a variety of applications and duty cycles.