SKU: 188351
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Perishables: Refrigerate immediately upon receiving to maintain optimal freshness. Follow the specific storage temperature guidelines mentioned on the packaging.
Frozen Items: Keep frozen until ready to use. Follow the thawing instructions on the package for best results.
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Duragard® Diamond Plate® SAE 15W-40 API CK-4 Synthetic Blend Engine Oil is engineered for extreme high-temperature and high-shear performance in heavy-duty diesel engines. It meets advanced requirements for 2017 and newer engines while remaining fully compatible with earlier engines that previously used CJ-4 oils.
This high-performance synthetic blend provides enhanced oxidation resistance for hotter engines, helping to minimize acid formation, control deposits, and maintain viscosity stability. It supports reduced wear, improved shear stability, and consistent lubrication under demanding operating conditions.
Suitable for heavy-duty diesel engines operating under high stress and temperature conditions. Designed for both modern engines requiring CK-4 performance and older engines using CJ-4 oils.
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