Duragard® Diamond Plate® SAE 15W-40 API CK-4 Synthetic Blend Engine Oil is an extreme performance (HTHS) high-temperature, high-shear viscosity synthetic blend oil formulated to meet the significantly improved specifications for 2017 and newer engines while being fully compatible for 2016 and prior engines that previously used CJ-4. Duragard® Diamond Plate® SAE 15W-40 API CK-4 Synthetic Blend Engine Oil will deliver more oxidization protection for hotter, heavy-duty engines, minimizing acid formation, deposits and viscosity increase, promoting reduced wear, improved shear stability, greater oxidation stability, and foam prevention. Download DATA SHEET SDS
