The Valvoline 5W-40 Full Synthetic Diesel Engine Oil is the perfect choice for heavy duty diesel engines. This oil provides excellent wear protection and helps reduce oil consumption and extend drain intervals. It also protects during cold start ups while controlling soot as Heavy Duty equipment can sit idle for extended periods of time. The advanced detergent and dispersant additives resist oxidation and fight deposits and sludge. The higher quality synthetic base oils and special inhibitors make this oil the perfect choice for your diesel engine.

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