P66 FLEET SUPREME EC EO (CK-4) 15W40 GALLON- CASE OF 3

Phillips 66^® Guardol Fleet EC (Emission Compatible) Diesel Engine Oil, formerly known as Fleet Supreme EC, is an API CK-4 engine oil developed for use in four-stroke cycle diesel engines designed to meet 2007 and later EPA on-highway exhaust emissions standards. It is specially formulated for compatibility with exhaust aftertreatment systems using diesel particulate filters (DPFs), diesel oxidation catalysts (DOCs) and/or selective catalytic reduction (SCR). It is backward serviceable for use in pre-2007 diesel engines.