10 Best Diesel Oils

After analyzing 513 products, scanning 4420 reviews, spending more than 36 hours of research and speaking with our test users, we think the Rotella 550045347-3PK T6 5W-40 1 gal. 3PK. CJ-4 Synthetic Motor is the one of the Best Diesel Oil on the market.

# Image Name Brand Price
1
⭐Best Choice
Rotella 550045347-3PK T6 5W-40 1 gal. 3PK. CJ-4 Synthetic Motor
Rotella 550045347-3PK T6 5W-40 1 gal. 3PK. CJ-4 Synthetic Motor Oil, 128. Fluid_Ounces, 3 Pack Check price Shell Rotella T $$$$$ Check price
2
Best under $100
Valvoline  Premium Blue  Extreme SAE 5W-40 Synthetic Engine Oil 1
Valvoline Premium Blue Extreme SAE 5W-40 Synthetic Engine Oil 1 GA, Case of 3 Check price Valvoline $$$$$ Check price
3
💲Best value for the money
Rotella 550045348-3PK Synthetic Blend Motor Oil
Rotella 550045348-3PK Synthetic Blend Motor Oil, 3 Pack (15W-40 CJ-4), 128. Fluid_Ounces Check price Shell Rotella T $$$$$ Check price
4 Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (5 Gallon Pail) Check price Shell Rotella T $$$$$ Check price
5
👑Premium Pick
Schaeffer Manufacturing 700-006 SynShield Durability Advantage Engine Oil 15W-40 (1
Schaeffer Manufacturing 700-006 SynShield Durability Advantage Engine Oil 15W-40 (1 Case) Check price Schaeffer Manufacturing Co $$$$$ Check price
6 Rotella 550045126-3PK Shell T4 15W40 Motor Oil Gallon Case (3/128 Rotella 550045126-3PK Shell T4 15W40 Motor Oil Gallon Case (3/128 Floz Bottels NAT Wt 384 Fl Oz), 128. Fluid_Ounces Check price Shell Rotella T $$$$$ Check price
7
Best under $50
Delo 257004470 400 XLE SAE Synblend Synthetic Blend Oil 15W40
Delo 257004470 400 XLE SAE Synblend Synthetic Blend Oil 15W40, 1 Gallon, 1. gallons Check price Delo $$$$$ Check price
8 Ford Genuine Fluid XO-15W40-5QSD SAE 15W-40 Super Duty Diesel Motor Ford Genuine Fluid XO-15W40-5QSD SAE 15W-40 Super Duty Diesel Motor Oil - 5 Quart Jug (3 PACK) Check price Ford $$$$$ Check price
9 Valvoline Premium Blue SAE 15W-40 Heavy Duty Motor Oil Valvoline Premium Blue SAE 15W-40 Heavy Duty Motor Oil - 1 Gallon (Pack of 3); 773780 Check price Valvoline $$$$$ Check price
10 Royal Purple 04154 / 300905 Duralec Super 15W40 CK-4 Motor Royal Purple 04154 / 300905 Duralec Super 15W40 CK-4 Motor Oil Synthetic - 1 gal. (Case of 3) Check price Royal Purple $$$$$ Check price

Rotella 550045347-3PK T6 5W-40 1 gal. 3PK. CJ-4 Synthetic Motor – Best Overall Diesel Oil

Rotella 550045347-3PK T6 5W-40 1 gal. 3PK. CJ-4 Synthetic Motor
  • Provides 1.5% 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
  • Suitable for diesel-powered vehicles from tractor/trailers to classic cars and heavy-duty diesel pickups that allow an SAE 5W-40

Valvoline Premium Blue Extreme SAE 5W-40 Synthetic Engine Oil 1 – Best under $100

Valvoline  Premium Blue  Extreme SAE 5W-40 Synthetic Engine Oil 1
  • Valvoline Premium Blue Engine oil is "The Only One" exclusively endorsed and recommended by Cummins
  • Superior synthetic base stocks provide faster, safe starts during freezing weather and enhanced thermal properties for hot weather operations
  • Enhanced protection against oil oxidation
  • Improved fuel economy potential over conventional 15W-40 oils
  • Excellent deposit protection. For any product or technical questions, please call 1-800-TEAM VAL

Rotella 550045348-3PK Synthetic Blend Motor Oil – Best Budget Diesel Oil

Rotella 550045348-3PK Synthetic Blend Motor Oil
  • Triple Protection Plus technology protects against wear, deposits and oil breakdown plus provides better low temperature flow compared to SAE 15W-40 oils
  • Helps control engine deposits for reliability at extended oil drain intervals
  • Formulated to control engine wear, 37% better than the maximum wear requirements in API CK-4 engine wear tests
  • Heavy duty engine oil formulated with synthetic base oil components
  • Delivers improved oxidation performance for increased resistance to breakdown under high temperatures compared to the previous formulation

Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil

Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil
  • Triple Protection from wear, deposits and oil breakdown, this conventional Diesel Engine Oil provides exceptional wear protection for heavy duty engines for longer life
  • Formulated with advanced additive technology, which is engineered for superior engine cleanliness throughout the oil drain interval
  • Provides increased shear stability for better viscosity control and optimal engine oil pressure
  • Heightens emission control system durability and improves oil aeration
  • Provides enhanced protection against oil oxidation for more efficient operation

Schaeffer Manufacturing 700-006 SynShield Durability Advantage Engine Oil 15W-40 (1 – Premium Pick

Schaeffer Manufacturing 700-006 SynShield Durability Advantage Engine Oil 15W-40 (1
  • Excellent wear protection during severe operating conditions
  • Oil durability: strong oxidation and viscosity control with less oil consumption
  • Better contamination control with superior soot-busting, deposit-dispersing capability
  • Strong stay-in-grade performance throughout the life of the oil
  • Friction modified with Micron Moly and Penetro
  • Diesel oil meets and exceeds API CK4.

Rotella 550045126-3PK Shell T4 15W40 Motor Oil Gallon Case (3/128

Rotella 550045126-3PK Shell T4 15W40 Motor Oil Gallon Case (3/128
  • Triple Protection from wear, deposits and oil breakdown, this conventional Diesel Engine Oil provides exceptional wear protection for heavy duty engines for longer life
  • Formulated with advanced additive technology, which is engineered for superior engine cleanliness throughout the oil drain interval
  • Provides increased shear stability for better viscosity control and optimal engine oil pressure

Delo 257004470 400 XLE SAE Synblend Synthetic Blend Oil 15W40 – Best under $50

Delo 257004470 400 XLE SAE Synblend Synthetic Blend Oil 15W40
  • 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
  • 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
  • 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. Its high performing detergent and dispersant additives provide excellent diesel engine component protection.
  • Exceptional soot dispersancy and wear control - Cylinders, pistons, rings, and valve train components are well protected against wear and corrosion, providing optimum service life and minimal maintenance, contributing to maximum equipment utilization and minimal downtime.

Ford Genuine Fluid XO-15W40-5QSD SAE 15W-40 Super Duty Diesel Motor

Ford Genuine Fluid XO-15W40-5QSD SAE 15W-40 Super Duty Diesel Motor
  • High-quality diesel engine oil formulated with premium hydro processed base oils and unique additive technology
  • It satisfies the warranty requirements of Ford Motor Company as well as most other domestic and import diesel engine manufacturers
  • It meets the requirements of international, Cummins CES 20081, Volvo VDS-4, Mack EO-O premium plus, Detroit diesel 93K218 and Caterpillar ECF-3
  • Can be used in older engines where the manufacturer recommended API categories CD, CF-4, CG-4, CH-4, CI-4 and CI-4 plus
  • Motorcraft SAE 15W-40 super duty diesel motor oil is suitable for power shift applications requiring Allison C-4 fluid

Valvoline Premium Blue SAE 15W-40 Heavy Duty Motor Oil

Valvoline Premium Blue SAE 15W-40 Heavy Duty Motor Oil
  • Valvoline Premium Blue Engine oil is "The Only One" exclusively endorsed and recommended by Cummins
  • Strong shear stability provides stay-in-grade performance
  • Outstanding wear protection
  • Superior deposit protection compared to industry requirements
  • Triple dispersant chemistry gives great protection against soot thickening

Royal Purple 04154 / 300905 Duralec Super 15W40 CK-4 Motor

Royal Purple 04154 / 300905 Duralec Super 15W40 CK-4 Motor
  • Better wear protection
  • Increased fuel efficiency
  • Better protection of the expensive catalytic emission system
  • Improved compatibility with fuels containing ethanol

Similiar Categories