BEST DIESEL ENGINE OILS

Looking for some of the best DIESEL ENGINE OILS? As you may know, there are dozens of similar products out there and some come with vastly different price tags. Let us help you out here – we have handpicked for you the best DIESEL ENGINE OILS.

10 BEST DIESEL ENGINE OILS

IMAGE PRODUCT RATING PRICE
1. Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Gallon, Case of 3)
2. Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Case of 3)
3. Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1...
4. Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Case of 3)
5. Valvoline Premium Blue SAE 15W-40 Diesel Engine Oil 1 GA, Case of 3
6. Delo 400 SDE SAE 15W-40 Motor Oil - 1 Gallon Jug, (Pack of 3)
7. Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)
8. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil...
9. Castrol 03849-3PK GTX Diesel 15W-40 Motor Oil - 1 Gallon, (Pack of 3)
10. Milesyn SXR 15W40 API CK-4 Full Synthetic Diesel Motor Oil 5 Gallon Pail

Best DIESEL ENGINE OILS

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

$67.85  in stock
6 new from $67.85
1 used from $70.77
Free shipping
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Features

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • 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

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

$83.99
$75.41  in stock
2 new from $75.41
Free shipping
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Features

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • 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

Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3

$54.77  in stock
6 new from $54.77
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • “The Only One“ endorsed and recommended by Cummins
  • Superior synthetic base stocks provide faster, safe starts during freezing weather and enhanced thermal properties for hot weather operations
  • Outstanding oxidation resistance supports long oil life in heavy duty engines
  • Superior wear protection for hardworking heavy-duty trucks and equipment

Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Case of 3)

$78.19  in stock
5 new from $78.19
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • 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

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

$68.86
$65.39  in stock
9 new from $65.39
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • One Solution Technology suitable for a wide range of heavy-duty engines including diesel, gas and natural gas applications
  • “The Only One“ endorsed and recommended by Cummins
  • Outstanding oxidation resistance supports long oil life in heavy duty engines
  • Superior wear protection for hardworking heavy-duty trucks and equipment

Delo 400 SDE SAE 15W-40 Motor Oil - 1 Gallon Jug, (Pack of 3)

$69.99
$61.82  in stock
7 new from $60.85
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as of July 26, 2021 2:34 pm

Features

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • 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

Mobil Super 96819 15W-40 Delvac 1300 Motor Oil - 1 Gallon (Pack of 4)

$78.87  in stock
7 new from $78.87
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as of July 26, 2021 2:34 pm

Features

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (2.5-Gallon, Case of 2)

$64.33  in stock
8 new from $64.33
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Formulated for enhanced deposit protection to help keep engines cleaner over the oil drain interval
  • Exclusive low ash formulation helps protect the exhaust catalysts and particulate filters found on the latest low emission vehicles
  • Meets or exceeds API CJ-4 requirements, and is designed to provide extra performance Shell Rotella T4 performs well in both older and new engines
  • Enhanced shear stability performance for viscosity control and optimal oil pressure in your engine

Castrol 03849-3PK GTX Diesel 15W-40 Motor Oil - 1 Gallon, (Pack of 3)

$78.08  in stock
2 new from $78.08
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • Provides exceptional protection from piston deposits, oil thickening and valve train wear while minimizing engine sludge formulation
  • Engineered to provide exceptional performance in engines operating under severe service conditions including towing and hauling under high temperatures
  • Special viscosity improvers, anti-wear, anti-oxidant and detergent additives protect and maintain cleanliness in hot running, heavy diesel and heavy duty gasoline engines
  • Applicable for on and off road heavy duty 4-stroke trucks, gasoline and diesel light trucks and passenger cars where API CJ-4, CI-4, CH-4, CG-4, CF-4, CF, SN are recommended

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

$96.22  in stock
1 new from $96.22
Free shipping
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as of July 26, 2021 2:34 pm

Features

  • Meet the Mack EO-O Premium Plus specification and API CK-4/SN specification
  • Meets the performance requirements of most diesel engine manufacturers such as Caterpillar, Cummins, Detroit Diesel, Ford, Mack, Navistar, and Volvo
  • Superior Anti-oxidation characteristic
  • Extended drain intervals