Top 10 15W-40 Oil Synthetic – Motor Oils

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1. Shell Rotella

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Case of 3, Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil 1-Gallon

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Shell Rotella #ad - Enhanced fuel economy capability of 1. 5 percent without compromising engine protection or durability compared to 15W-40 oils. Increased shear stability for better viscosity control and optimal engine oil pressure.

Exceptional wear protection for longer life in a wide range of heavy-duty engine applications — from pickup trucks to tractors to semi rigs. Case of three 1-gallon bottles with ergonomic design for easy handling and pouring. Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants compared to previous formulation.

Advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles. Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster. Full synthetic 15w-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves low-temperature flow.
BrandShell Rotella #ad
ManufacturerRotella #ad
Part Number550050467
Model550050467-3PK
WarrantyLimited

2. Cummins

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Cummins 3265336 Onan SAE 15W-40 Oil, 1 Quart

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Cummins #ad - Provides maximum protection for engines. Reduces consumption and engine wear. Factory tested oil. Fit type: Universal. 32 oz.
BrandCummins #ad
ManufacturerCummins/Onan #ad
Height2.75 Inches
Length9 Inches
Weight1 Pounds
Width4.25 Inches
Part Number3265336
Model3265336

3. Valvoline

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Case of 3, Valvoline Premium Blue SAE 15W-40 Diesel Engine Oil 1 GA

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Valvoline #ad - Superior deposit protection compared to industry requirements. Outstanding wear protection. Strong shear stability provides stay-in-grade performance. Valvoline premium blue Engine oil is The Only One exclusively endorsed and recommended by Cummins.
BrandValvoline #ad
ManufacturerValvoline #ad
Height11.44 Inches
Length14.5 Inches
Weight24 Pounds
Width9.13 Inches
Part Number773780
Model773780

4. Royal Purple

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5 gal., Royal Purple 05154 API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil

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Royal Purple #ad - Better wear protection. Improved compatibility with fuels containing ethanol. Better protection of the expensive catalytic emission system. Increased fuel efficiency.
BrandRoyal Purple #ad
ManufacturerRoyal Purple #ad
Height14.75 Inches
Length10.5 Inches
Weight18 Pounds
Width9.75 Inches
Part Number05154
Model5154
WarrantyN

5. Shell Rotella

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

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Shell Rotella #ad - Case of three 1-gallon bottles with ergonomic design for easy handling and pouring. Synthetic blend 15w-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown.

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. Controls engine wear 37 percent better than the maximum wear requirements in API CK-4 engine wear tests. Improved oxidation performance for increased resistance to oil breakdown under high temperatures compared to the previous formulation.
BrandShell Rotella #ad
ManufacturerShell Rotella #ad
Weight24 Pounds
Part Number550045348-3PK
Model550045348-3PK
WarrantySee manufacturer's label

6. Shell Rotella

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Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil 1-Gallon, Single Pack

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Shell Rotella #ad - Enhanced fuel economy capability of 1. 5 percent without compromising engine protection or durability compared to 15W-40 oils. Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants compared to previous formulation.

Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster. Full synthetic 15w-40 diesel engine oil with Triple Protection Plus technology protects against wear, oil breakdown, deposits, and improves low-temperature flow. Single 1-gallon bottle with ergonomic design for easy handling and pouring.

Increased shear stability for better viscosity control and optimal engine oil pressure. Exceptional wear protection for longer life in a wide range of heavy-duty engine applications — from pickup trucks to tractors to semi rigs. Advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles.
BrandShell Rotella #ad
ManufacturerRotella #ad
Part Number550050467-5Q
Model550050467-5Q
WarrantyLimited

7. Shell Rotella

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Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1-Gallon, Single Pack

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Shell Rotella #ad - Improved deposit control - advanced multi-functional dispersant additives in combination with synthetic base oils provide an enhanced level of protection against the effects of soot, dirt and other contaminants. Better fuel economy - compared to 15W-40 oils Rotella offers enhanced fuel economy capability of 1. 5% without compromising engine protection or durability. Country of origin : United states. Improved wear performance - provides a significantly increased level of protection against harmful engine wear when compared to previous generation API CJ-4 engine oils.
BrandShell Rotella #ad
ManufacturerRotella #ad
Height4.31 Inches
Length11.31 Inches
Width8.1 Inches
Part Number550045347
Model550045347
Warranty1 year limited

8. Shell Rotella

#ad

Case of 3, Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1-Gallon

#ad
Shell Rotella #ad - Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster. Full synthetic 5w-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves low-temperature flow.

Case of three 1-gallon bottles with ergonomic design for easy handling and pouring. Exceptional wear protection for longer life in a wide range of heavy-duty engine applications — from pickup trucks to tractors to semi rigs. Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants compared to previous formulation.

Increased shear stability for better viscosity control and optimal engine oil pressure. Enhanced fuel economy capability of 1. 5 percent without compromising engine protection or durability compared to 15W-40 oils. Advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles.
BrandShell Rotella #ad
ManufacturerRotella #ad
Weight23.55 Pounds
Part Number550045347-3PK
Model550045347-3PK
Warranty1 year limited

9. Chevron

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Delo 400 XLE Heavy Duty Synblend Diesel Engine Oil 15W-40, Pack of 1, 1 Gallon

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Chevron #ad - Its high performing detergent and dispersant additives provide excellent diesel engine component protection. Exceptional soot dispersancy and wear control - Cylinders, rings, providing optimum service life and minimal maintenance, and valve train components are well protected against wear and corrosion, pistons, contributing to maximum equipment utilization and minimal downtime.

Isoclean: certified clean - ensure your lubricants meet OEM cleanliness requirements to help you minimize downtime, reduce maintenance costs and extend equipment life. Provides high performance piston deposit control and turbocharger protection due to its superb oxidation performance.

Isosyn advanced technology: the next generation of Heavy Duty Engine Oil Chemistry - engineered to deliver longer oil life, better wear protection and longer engine life. A premium synthetic blend, long drain  mixed-fleet engine oil specifically formulated for on- highway applications, including 2017 greenhouse gas GHG 17 compliant diesel engines.
BrandChevron #ad
ManufacturerChevron #ad
Height12.1 Inches
Length7.8 Inches
Width4.33 Inches
Part Number257004470
Model257004470
WarrantySee manufacturer's warranty

10. Schaeffer Manufacturing Co

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Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle Pack of 12

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Schaeffer Manufacturing Co #ad - Friction modified with micron moly and penetrate. Oil durability: strong oxidation and viscosity control with less oil consumption. Excellent wear protection during severe operating conditions. Better contamination control with superior soot-busting, deposit-dispersing capability. Strong stay-in-grade performance throughout the life of the oil.
BrandSchaeffer Manufacturing Co #ad
ManufacturerSchaeffer Manufacturing Co. #ad
Part Number0700CK4-012
Model0700CK4-012
WarrantyCheck with manufacturer.