Top 4 Royal Purple 15W40 Diesel Oil Synthetic – Motor Oils

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1. Royal Purple

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Royal Purple ROY04154 04154 15W40 Oil, 1 Gallon 128 Ounces

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Royal Purple #ad - Recommeded for engines specifying apI service CI-4, CI-4 Plus, CJ-4, and CK-4. Fit type: Universal Fit. Greatly extends oil drain intervals. Robust detergents remove deposits and maintain engine cleanliness. Superior corrosion protection. Top quality synthetic base oils provide excellent cold flow and protection at all operating temperatures.
BrandRoyal Purple #ad
ManufacturerROYAL PURPLE #ad
Height7 Inches
Length5 Inches
Weight7.67 Pounds
Width10 Inches
Part Number04154
ModelROY04154

2. Royal Purple

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1 gal. Case of 3, Royal Purple 44154 04154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil

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Royal Purple #ad - Better wear protection. Royal purple 44154 api-licensed sae 15w-40 high performance Synthetic Motor Oil - 1 Gallon Jug, Pack of 3, Superior corrosion protection. Improved compatibility with fuels containing ethanol. Better protection of the expensive catalytic emission system. Increased fuel efficiency.
BrandRoyal Purple #ad
ManufacturerROYAL PURPLE #ad
Height8 Inches
Length15 Inches
Weight24 Pounds
Width9 Inches
Part Number44154
Model44154

3. Royal Purple

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5 qt, Model:ROY11750, Royal Purple 11750 HMX SAE 10W-30 High-Mileage Synthetic Motor Oil

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Royal Purple #ad - Minimizes wear and restores lost engine performance. Exceptional oxidation stability. Superior corrosion protection. Reduces engine deposits. Extended drain intervals. Increased protection against LSPI. Fortified with Zinc/Phosphorus anti-wear additive.
BrandRoyal Purple #ad
ManufacturerROYAL PURPLE #ad
Height7.81 Inches
Length15.38 Inches
Weight9.2 Pounds
Width13.75 Inches
Part Number11750
ModelROY11750
WarrantyManufacturer Warranty

4. Shell Rotella

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Case of 3, Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil 1 Gallon

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Shell Rotella #ad - Case of three 1-gallon bottles with ergonomic design for easy handling and pouring. Improves low-temperature flow compared to conventional 15W-40 oils. Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress.

Helps control engine deposits for reliability at extended oil drain intervals always follow the OEM recommended oil drain interval. Improved oxidation performance for increased resistance to oil breakdown under high temperatures compared to the previous formulation. Synthetic blend 15w-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown. Controls engine wear 37 percent better than the maximum wear requirements in API CK-4 engine wear tests.
BrandShell Rotella #ad
ManufacturerShell Rotella #ad
Weight24 Pounds
Part Number550045348-3PK
Model550045348-3PK
WarrantySee manufacturer's label