With numerous Best 5w40 Synthetic Diesel Oil brands to select from – including big names like Shell Rotella,Mobil,Valvoline,Schaeffer’s – picking the right product can feel overwhelming. But we’re here to simplify your search for the perfect Best 5w40 Synthetic Diesel Oil.
We thoroughly tested and evaluated a wide range of top Best 5w40 Synthetic Diesel Oil contenders to help you navigate the crowded market. Our stand-out favorite is Shell Rotella Best 5w40 Synthetic Diesel Oil for its unparalleled quality and top-tier features. Below you’ll discover more of our top-rated Best 5w40 Synthetic Diesel Oil picks currently available.
Make sure to consult our buying guide too for valuable insights on choosing the ideal product for your needs. It covers all the key factors when shopping for a Best 5w40 Synthetic Diesel Oil. With our research backing your decision, you can confidently invest in a Best 5w40 Synthetic Diesel Oil you’ll truly love.
Editor's Choice
Valvoline European Vehicle Full Synthetic 5W-40 Motor Oil 5 Quart
Premium Pick
Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA
Budget Pick
Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)
Top 10 Best 5w40 Synthetic Diesel Oil
We researched and compared the top products in the Best 5w40 Synthetic Diesel Oil category to provide you with these recommendations.
1. Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)
- Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
- Improved wear performance with significantly increased level of protection against harmful engine wear (compared to previous generation API CJ-4 engine oils)
- Enhanced fuel economy capability of 1.5% 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
- Resists breakdown by heat to provide continuous protection throughout the service interval, and also provides improved low-temperature flow compared to conventional 15W-40 oils
- Advanced low-ash formulation helps control blocking of or poisoning of exhaust after-treatment devices
- Limited warranty valid up to 15 years or 500,000 miles (whichever comes first) if you exclusively use Shell Rotella T6 Full Synthetic Technology heavy-duty engine oil*
- Meets or exceeds the following industry specifications: API CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4; ACEA E11; JASO DH-2, MA, MA2
- Meets or exceeds the following OEM specifications: Cummins CES 20086, 2008; Volvo VDS-4.5, VDS-4; MACK EOS-4.5; Detroit Fluid Specification (DFS) 93K222, 93K218; Caterpillar ECF-2, ECF-3; MAN M3575; Allison TES-439; DTFR 15C100 (prev. MB 228.31); Ford WSS-M2C171-F1
- For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owners manual
2. Mobil 1 Turbo Diesel Truck Full Synthetic Motor Oil 5W-40, 1 Gal
- Mobil 1 Turbo Diesel Truck Is Designed For Modern Diesel Truck Engines, Delivering Long Drain Capability, Exceptional Performance, And Potential Fuel Economy Benefits
- Meets Or Exceeds The Demanding Specifications Of Major Truck Manufacturers - One Engine Oil Can Be Used For Mixed Fleet Operations
- Recommended For Use In All Super High-Performance Diesel Applications, Including Low Emission Engines
- Helps Engines Last Longer By Reducing Low-Temperature Sludge Buildup And High-Temperature Deposits
3. Valvoline European Vehicle Full Synthetic 5W-40 Motor Oil 5 Quart
- Advanced protection for European gasoline and diesel vehicles against the four main causes of engine breakdown: wear friction heat and deposits
- Formulated with top-quality anti-wear additives that go beyond industry and OEM standards in European vehicles
- Premium antioxidants and cleaning detergents combine to safeguard against damaging deposits
- Exceptional high/low temperature protection defends your engine no matter the climate or driving conditions
- Meets or exceeds all requirements of API SP, ACEA A3/B3, A3/B4, MB-Approval 229.5, MB-Approval 229.3, MB-Approval 226.5, Approved under VW Standard 502.00/505.00, VW 505.01, BMW LL-01, BMW LL-14FE+, Porsche A40, Renault RN0700 & RN0710, PSA B71 2296, Chrysler MS-12633, Chrysler MS-10725
- American made and formulated, from the Original Motor Oil brand trusted for more than 150 years
4. Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic 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 & SLUDGE with higher quality synthetic 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
- ADVANCED FUEL ECONOMY up to 1.5% over 15W-40 conventional oils in on-highway operations
- UNIQUE 5,000 MILES OIL DRAINS EXTENSION in Cummins X15/X12 engines when average is 7mpg or higher
- AMERICAN MADE & FORMULATED to maximize your engines life and improve its performance
- THE ONLY ONE exclusively endorsed and recommended by Cummins
5. Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3
- EXCELLENT WEAR PROTECTION IN HEAVY DUTY APPLICATIONS that can take a toll on critical internal moving parts
- RESISTS OXIDATION AND FIGHTS DEPOSITS & SLUDGE with higher quality synthetic 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
- ADVANCED FUEL ECONOMY up to 1.5% over 15W-40 conventional oils in on-highway operations
- UNIQUE 5,000 MILES OIL DRAINS EXTENSION in Cummins X15/X12 engines when average is 7mpg or higher
- AMERICAN MADE & FORMULATED to maximize your engines life and improve its performance
- THE ONLY ONE exclusively endorsed and recommended by Cummins
6. Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40,
- Maintains Fuel Economy Without Sacrificing Engine Durability.
- Superior Cold Weather Startability And Operating Characteristics.
- Oil Strength: Withstands Higher Heat Range Than Conventional Oils.
- Keep-Clean Performance: Superior Soot Busting, Deposit-Dispersing Capability.
7. Ford Genuine Fluid XO-5W40-5QSD SAE 5W-40 Full Synthetic Diesel Motor Oil - 1.25 U.S. Gal (4.73L)
- It satisfies the requirements as well as most other domestic and import diesel engine manufacturers
- Country of Origin : United States
- The Package Height of the Product is 14.0 inches
- The Package Length of the Product is 8.0 inches
8. Mobil 1 122260 5W-40 Turbo Diesel Synthetic Motor Oil - 1 Gallon (Pack of 3)
- 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
9. Triax Fleet Supreme ESP 5W-40 API CK-4 Full Synthetic Heavy Duty Diesel Engine Oil | Moly Boron
- The TRIAX Difference: Quieter engine operation, lower operating temperature, 4-6% MPG improvement, faster and smoother turbo spooling, exceptional cold start properties down to -45 F, and outperforms leading brand motor oils by a wide margin
- Friction Modified for Extreme Wear Protection: Boosted with Nano-Boron and Moly friction modifiers for significantly improved wear protection over any other diesel engine oils; Up to 68% less wear than learning OEM and industry standards due to a much lower friction coefficient (50% lower or better) than the competition
- Long Life and Durability: Capable of drain intervals exceeding 100,000 miles for highway semi trucks and 30,000 miles super duty pickups; High shear stability and film strength; Maintains its viscosity better than other diesel oils; Protects your engine in severe service conditions such as towing or hauling, without compromising drain intervals
- No Stiction: The only engine oil that stops HEUI injector stiction, injector lockup, and engine misfires; No need to use additional aftermarket additives; Everything you need is built in and fully optimized for unmatched performance
- DPF / SCR Protection: Keeps your diesel particulate filters clean and clog-free while maintaining optimal engine functionality. Fully compatible with all heavy-duty CK-4 or previous diesel engines, including Volvo, Cummins, Detroit Diesel, MAN, Scania, Powerstroke, and Duramax
- Ideal for Diesel Pick-Up Trucks: Full compatibility with any heavy-duty diesel trucks from Ford Powerstroke, Chevy Silverado, Dodge RAM, GMC Sierra, and many others
10. Pennzoil Platinum Euro Full Synthetic 5W-40 Motor Oil, 1 Quart (6 Pack)
- Full synthetic 5W-40 motor oil that is made with natural gas and designed to maximize engine protection
- Formulated for modern light-duty diesel and high-performance engines in European vehicles, including Fiat, Mercedes-Benz, Porsche, Renault, and VW
- Helps extend engine life and protects for up to 15 years or 500,000 miles, whichever comes first, guaranteed*
- Delivers faster low-temperature oil flow and protection in extreme heat
- Protects horsepower and keeps engine closer to factory clean (based on Sequence VH and M-111 sludge test using SAE 0W-40)
- Provides better fuel economy (based on latest industry standard)
- Meets or exceeds the following industry requirements: API SP and all previous categories; ACEA A3/B3, A3/B4
- Meets or exceeds the following OEM specifications: Fiat 9.55535.Z2 and 9.55535.N2; Chrysler MS-10725 and MS-12991; BMW LL-01; Mercedes-Benz MB-Approval 226.5/ 229.3/229.5; Porsche A40; Renault RN 0700, RN 0710; Volkswagen VW 502 00, 505 00
- For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owners manual
Peter
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