Kendall Super-D XA 10W30 Engine Oil is a synthetic blend engine oil made for use in four-stroke cycle diesel engines made to meet 2007 and later EPA highway standards. It is specially formulated to protect exhaust after treatment devices such as diesel particulate filters, diesel oxidation catalysts and selective catalytic reduction (SCR) systems. It is backward serviceable for use in pre-2007 diesel engines, and may be used in mixed fleets with both diesel and gasoline-fueled vehicles. This product meets or exceeds the performance requirements of API service categories CK-4 and SN. Advanced heavy duty engine protection with the strength of liquid titanium.