Are you looking for best 15w40 diesel oil, we’ve consulted top experts who has in-and-out knowledge about the 15w40 diesel oil. We choose the top most quality product, which comes with amazing features you’ve never heard before. We have filter more than 100+ of product to give you top 10 list of best 15w40 diesel oil.

This list is undoubtedly the best 15w40 diesel oil available in the market today. However, if you don’t want to spend more time on filtering and finding which one is good 15w40 diesel oil, then you should absolutely go for our Top list of the winner. which comes with all the basic features one could expect in a 15w40 diesel oil.


Best 15w40 diesel oil – The Winners!


But these three has some more competitions too, Check out below List of Top 10 best 15w40 diesel oil.

If you are ready to choose a new 15w40 diesel oil, check out our recommendations for the best 15w40 diesel oil. But if you’d like to learn more about the various types of 15w40 diesel oil available and how to choose the right one for you, read on.


List of Top 10 Best 15w40 diesel oil In Detailed


Bestseller No. 1
Valvoline Premium Blue One Solution SAE 15W-40 Diesel Engine Oil 1 GA
  • EXCELLENT WEAR PROTECTION IN HEAVY DUTY APPLICATIONS that can take a toll on critical internal moving parts
  • RESISTS OXIDATION AND FIGHTS DEPOSITS with high quality base oils and special inhibitors
  • PROTECTS DURING COLD START UPS WHILE CONTROLING SOOT as heavy-duty equipment can sit idle for extended periods of time
  • PROPRIETARY ONE SOLUTION GEN2 TECHNOLOGY designed to protect hardworking diesel, gasoline and natural gas engines in both on-highway and off-highway applications
  • UNIQUE 5,000 MILES OIL DRAINS EXTENSION in Cummins X15/X12 engines when average is 7mpg or higher
  • AMERICAN MADE & FORMULATED to maximize your engine’s life and improve it’s performance
  • THE ONLY ONE exclusively endorsed and recommended by Cummins
SaleBestseller No. 2
Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Case of 3)
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • 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
SaleBestseller No. 3
Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
  • 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
  • Package Weight : 23.8 pounds
SaleBestseller No. 4
Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle (Pack of 12)
  • 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 penetrate
Bestseller No. 5
Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
  • Full synthetic 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves low-temperature flow
  • Exceptional wear protection for longer life in a wide range of heavy-duty engine applications — from pickup trucks to tractors to semi rigs
  • 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)
  • Increased shear stability for better viscosity control and optimal engine oil pressure
  • Better cold-cranking properties and low-temperature pumpability for reaching critical engine parts faster
  • Case of three 1-gallon bottles with ergonomic design for easy handling and pouring
  • Advanced low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low-emission vehicles
Bestseller No. 6
Delo 400 XLE Heavy Duty Synblend Diesel Engine Oil 15W-40, 1 Gallon, Pack of 1
  • 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.
SaleBestseller No. 7
Delo 400 SDE SAE Conventional Heavy Duty Diesel Engine Oil 15W-40,1 Gallon, Pack of 3
  • Premium quality heavy duty motor oil manufactured in the USA
  • Formulated to meet the requirements of post-2007 low emission engines
  • Provides outstanding performance with ultra-low sulfur diesel and also with normal and low sulfur diesel fuels
  • May be used in older conventional engines and gasoline engines
  • Formulated with ISOSYN technology
Bestseller No. 8
Chevron Delo 400 XLE SAE Synblend Synthetic Blend Oil 15W40, 1 Gallon, Case of 3
  • 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
  • Isozyme Advanced Technology: The Next Generation of Heavy Duty Engine Oil Chemistry - engineered to deliver longer oil life, better wear protection and longer engine life
  • Isoclinal: 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.
Bestseller No. 9
Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Single Pack)
  • Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
  • Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress
  • Improves low-temperature flow (compared to conventional 15W-40 oils)
  • 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
  • Single 1-gallon bottle with ergonomic design for easy handling and pouring
Bestseller No. 10
Ford Genuine XO-15W40-5QSD SAE 15W-40 Super Duty Diesel Motor Oil - 5 Quart Jug
  • High-quality diesel engine oil formulated with premium hydro processed base oils and unique additive technology
  • Package Dimensions: 11.176 L x 28.447 H x 23.114 W (centimeters)
  • Package Weight : 4.263 kilograms
  • Country of Origin : United States

Hope this list of the best 15w40 diesel oil will be helpful for you. Feel free to contact us if you have any questions about our site or our reviews, and we will be happy to help you with your purchasing decisions in any way we can.