Schaeffers Sunshields Durability Advantage is a premium advanced performance, synthetic plus, heavy-duty diesel engine oil formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration. Sunshields Durability Advantage provides excellent equipment durability and longevity even during harsh, extreme duty operating conditions. Using Schaeffer's proprietary friction modifiers, Micron Moly and Penetro, Sunshields Durability Advantage creates a slippery, tenacious shield that prevents metal-to-metal contact. This added layer of durability protection significantly reduces wear on bearings, rings, pistons, cylinders and valve trains. Sunshields Durability Advantage is suitable for use in 2007 and 2010 emission complaint engines that utilize heavy exhaust gas recirculation (EGR) and exhaust after-treatment devices such as diesel particulate filters (DPFs) with or without diesel oxidation catalysts (DOCs) and selective catalytic reduction (SCR).Sunshields Durability Advantage meets and exceeds API CK-4, CJ-4, CI-4, CI-4 Plus and older.