Top 8 15W-40 Full Synthetic – Motor Oils

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1. Shell Rotella T

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

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Shell Rotella T #ad - Provides 1. For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual. 5% improved fuel economy performance compared to SAE 15W-40 oils. Triple protection plus formula combines fully synthetic base oils with advanced additives for excellent equipment protection and long engine life. Formulated with additive technology that protects against the effects of soot, dirt and other contaminants. Engineered with shear stability to resist viscosity loss and maintain optimal engine oil pressure.
BrandShell Rotella T #ad
ManufacturerRotella #ad
Part Number550050467-3PK
Model550050467-3PK
WarrantyLimited

2. Royal Purple

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1 Gallon Each Pack of 6, Royal Purple API-Licensed SAE 15W-40 High Performance Synthetic Motor Oil

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Royal Purple #ad - Better protection of the expensive catalytic emission system. Better wear protection Increased fuel efficiency. Improved compatibility with fuels containing ethanol Superior corrosion protection. Case of 6 // 1 Gallon Each.
BrandRoyal Purple #ad
ManufacturerRoyal Purple #ad
Height10 Inches
Length10 Inches
Weight6 Pounds
Width10 Inches
Part Number04154(6)

3. Valvoline

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Case of 3, Valvoline Premium Blue One Solution 9200 SAE 15W-40 Diesel Engine Oil 1 GA

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Valvoline #ad - Excellent oxidation resistance and TBN retention support long oil life. Outstanding wear protection. Endorsed & recommended by cummins, carries CES 20092, CES 20086 and CES 20085 approvals. Recommended for an increased oil drain interval extension for some natural gas engine applications.
BrandValvoline #ad
ManufacturerValvoline #ad
Height11.44 Inches
Length14.5 Inches
Width9.13 Inches
Part Number885382-CS
Model885382-CS

4. Amazon Basics

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AmazonBasics Full Synthetic Motor Oil, 1 Gallon, 5W-40

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Amazon Basics #ad - Helps prevent build up that can cause rust and corrosion. Reduces friction for less engine wear. For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual. High resistance to viscosity and thermal breakdown. Formulated for longer drain intervals. Helps reduce exhaust emissions.
BrandAmazon Basics #ad
ManufacturerAmazonBasics #ad
Height11.75 Inches
Length7.63 Inches
Width4.5 Inches
Part NumberAM054K3P
ModelAM054K3P

5. MILES LUBRICANTS

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Milesyn SXR 15W40 API CK-4 Full Synthetic Diesel Motor Oil 5 Gallon Pail

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MILES LUBRICANTS #ad - Superior Anti-oxidation characteristic. Meet the mack eo-o premium plus specification and API CK-4/SN specification. Extended drain intervals. Meets the performance requirements of most diesel engine manufacturers such as Caterpillar, Cummins, Detroit Diesel, Navistar, Ford, Mack, and Volvo.
BrandMILES LUBRICANTS #ad
ManufacturerMILES LUBRICANTS #ad
Part NumberMSF200203
ModelMSF200203

6. Schaeffer Manufacturing Co

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

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Schaeffer Manufacturing Co #ad - Excellent wear protection during severe operating conditions. Friction modified with micron moly and penetrate. Better contamination control with superior soot-busting, deposit-dispersing capability. Oil durability: strong oxidation and viscosity control with less oil consumption. 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.

7. Shell Rotella T

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

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Shell Rotella T #ad - Engineered with shear stability to resist viscosity loss and maintain optimal engine oil pressure. Formulated with additive technology that protects against the effects of soot, dirt and other contaminants. Suitable for diesel-powered vehicles from tractor/trailers to classic cars and heavy-duty diesel pickups that allow an SAE 5W-405% improved fuel economy performance compared to SAE 15W-40 oils. Provides 1. Triple protection plus formula combines fully synthetic base oils with advanced additives for excellent equipment protection and long engine life.
BrandShell Rotella T #ad
ManufacturerRotella #ad
Part Number550045347-3PK
Model550045347-3PK
Warranty1 year limited

8. Mobil 1

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Mobil 1 122260 5W-40 Turbo Diesel Synthetic Motor Oil, 1 Gallon Pack of 3

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Mobil 1 #ad - Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean. Wide viscosity range provides outstanding protection consistent with an SAE 40 grade oil at high temperatures, combined with the easy cold-start performance of a 5W rated oil. Outstanding wear protection. Excellent high- and low-temperature performance; Pours at temperatures as low as -53 degree Fahrenheit and protects at oil temperatures as high as 400 degree Fahrenheit. Improved protection against sludge and harmful deposits; Excellent fuel economy benefits.
BrandMobil 1 #ad
ManufacturerMobil 1 #ad
Part Number120782-3PK
Model120782-3PK