Product: Royal Purple 04154 Duralec Super SAE 15W-40 API CK-4 High Performance Diesel Motor Oil - 1 Gallon
Brand: Royal Purple
Color: Royal Purple
Superior corrosion protection
Top quality synthetic base oils provide excellent cold flow and protection at all operating temperatures
Robust detergents remove deposits and maintain engine cleanliness
Greatly extends oil drain intervals
Recommeded for engines specifying API service CI-4, CI-4 Plus, CJ-4, and CK-4

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