Best diesel motor oil – Top 8 of 2019


We read thousands reviews, and put together a list of the best sellers. Check out the top diesel motor oil below.

No. 1
Rotella T5 Synthetic Blend Diesel Motor Oil, 15W-40 CK-4, 1 Gallon - Pack of 3
  • Triple Protection Plus technology protects against wear, deposits and oil breakdown plus provides better low temperature flow compared to...
  • 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
No. 2
Valvoline 5W-40 Premium Blue Extreme Synthetic Diesel Engine Oil - 1gal (Case of 3) (774038-3PK)
  • 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...
  • 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
No. 3
Delo 257004470 400 XLE SAE Synblend Synthetic Blend Oil 15W40, 1 Gallon, 1. gallons
  • A premium synthetic blend, long drain  mixed-fleet engine oil specifically formulated for on- highway applications, including 2017...
  • Isosyn Advanced Technology: The Next Generation of Heavy Duty Engine Oil Chemistry - engineered to deliver longer oil life, better wear...
  • Isoclean: Certified clean - ensure your lubricants meet OEM cleanliness requirements to help you minimize downtime, reduce maintenance costs...
  • Provides high performance piston deposit control and turbocharger protection due to its superb oxidation performance. Its high performing...
  • Exceptional soot dispersancy and wear control - Cylinders, pistons, rings, and valve train components are well protected against wear and...
SaleNo. 4
Rotella T6 Synthetic Diesel Motor Oil 5W-40 CJ-4, 1 Gallon - Pack of 1
  • 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...
  • 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
No. 5
Rotella T4 Triple Protection Diesel Oil, 15W-40 (CK-4), 1 Gallon - Pack of 3
  • Diesel engine oil
  • 1 Gallon Shell ROTELLA T4 Triple Protection 15W-40 Heavy Duty Diesel Engine Oil
  • Heavy Duty
SaleNo. 6
Rotella T4 Triple Protection Diesel Motor Oil 15W-40 CK-4, 5 Gallon - Pack of 1
  • Triple Protection from wear, deposits and oil breakdown, this conventional Diesel Engine Oil provides exceptional wear protection for heavy...
  • 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
SaleNo. 7
AmazonBasics Full Synthetic Motor Oil - for Heavy Duty Diesel and Gasoline Engines - 5W-40 - 1 Gallon
  • Full-synthetic motor oil (5W-40, 1 gallon) for heavy duty Diesel and Gasoline engines; improved fuel economy when compared to 15W-40 engine...
  • Extended drain capable; superior high and low temperature protection including cold-weather startups
  • Helps prevent build up that can cause rust and corrosion; high resistance to viscosity and thermal breakdown
  • Helps to fight volatility burn-off to minimize engine deposits and exhaust emissions
  • CK-4/SN approved; always follow vehicle manual recommendations
No. 8
Schaeffer Manufacturing Co. 0700CK4-006 SynShield Durability Advantage 15W-40, 6 gal, Bottle (Pack of 6)
  • 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