Top 20 Best synthetic oil for diesel engines : Reviews & Buying Guide

There is no one-size-fits-all answer to the question of what the best synthetic oil for diesel engines is. However, there are a few factors that can help you narrow down your options and choose the synthetic oil for diesel engines that is right for you. First, consider your needs and what you hope to achieve with the product.

Then, look at the different features offered by each synthetic oil for diesel engines and decide which ones are most important to you. Finally, read reviews and compare prices to find the best value for your money. With these factors in mind, you should be able to find the best product for your needs.

Need Quick Selection A synthetic oil for diesel engines? Just Follow This Table

Place Image Product Information Score
1 Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Diesel Engine Oil 1 GA, Case of 3 Valvoline Premium Blue Extreme SAE W- Full by Valvoline
9.3
2 Valvoline Premium Blue SAE 15W-40 Diesel Engine Oil 1 GA, Case of 3 Valvoline Premium Blue SAE W- Diesel Engine by Valvoline
9.7
3 Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Case of 3) Shell Rotella T Full Synthetic W- Diesel by Shell
8.9
4 Triax Fleet Supreme ESP 5W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum & Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail) Triax Fleet Supreme ESP W- API CK- by Triax
9.8
5 Lucas Oil 10299-PK4 Synthetic 15W-40 CJ-4 Truck Oil - 1 Gallon Jug, Pack of 4 Lucas Oil -PK Synthetic W- CJ- Truck by Lucas
9.8
6 Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Single Pack) Shell Rotella T Synthetic Blend W- Diesel by Shell
9.1
7 Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle Schaeffer Manufacturing Co CK - S SynShield by Schaeffer
9.8
8 Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum and Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail) Triax Fleet Supreme ESP W- API CK- by Triax
9.5
9 Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil (1-Gallon, Case of 3) Shell Rotella T Synthetic Blend W- Diesel by Shell
8.9
10 AC Delco dexosD Light Duty Diesel Motor Oil 0W-20 Synthetic Motor Oil, 7 Quarts fits 3.0 Diesel engine AC Delco dexosD Light Duty Diesel Motor by AC
9.4

Best synthetic oil for diesel engines in 2022

SaleBestseller No. 1

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

Popularity Score 9.3
Quality Score 9.4
Sentiment Score 9.2

Highlighted 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

Additional Info :

Brand Valvoline
Color Black
Item Dimensions
Height 20
Width 22
Length 35
Weight 81.97
Bestseller No. 2

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

Popularity Score 9.4
Quality Score 9.5
Sentiment Score 9.1

Highlighted Features

  • 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

Additional Info :

Brand Valvoline
Color Grey
Item Dimensions
Height 13
Width 30
Length 23
Weight 38.98
Bestseller No. 3

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

Popularity Score 8.9
Quality Score 9.2
Sentiment Score 9.7

Highlighted Features

  • 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

Additional Info :

Brand Shell
Color Off-white
Item Dimensions
Height 16
Width 44
Length 27
Weight 36.78
Bestseller No. 4

Triax Fleet Supreme ESP 5W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum & Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail)

Popularity Score 9.3
Quality Score 9.6
Sentiment Score 9.1

Highlighted Features

  • Unique Additive Technology for UNSURPASSED WEAR PROTECTION, oxidation, and high temp stability. 60% lower wear than leading lubricants and standards. WIDE RANGE COMPATIBLE - Compatible with all heavy-duty diesel engines.
  • HIGHEST VISCOSITY INDEX any 5W-40 motor oil, of any brand, with exceptional stability and flow properties. Friction modified and VI stabilizer pre-boosted. Un-rivaled turbo-charger protection, will not create deposits and ash on turbo bearings (will not fry on the turbo). Up to 4% Fuel economy vs any 15W-40. COLD FLOW - Exceptional cold flow down to - 46 F.
  • OUTSTANDING POWER-STROKE PERFORMANCE Including 6.0 L turbo diesel: ELIMINATES STICTION AND INJECTOR ISSUES that plague Power-stroke engines - No need for additional additives - Contains state-of-the-art dispersal and ash control systems to keep your engine extremely clean.
  • EXTREME DRAIN CAPABILITIES: 25,000 mile drain interval for pickups and 80,000 for class 8 semi-trucks*
  • WHAT WILL YOU NOTICE THE FIRST TIME YOU SWITCH? - Dramatic reduction of engine noise. Improved fuel economy by at least 2%. Substantially longer drain intervals vs all other brands. Virtually no deposits on turbos. Significantly improved oil analysis results and engine durability.

Additional Info :

Brand Triax
Color Silver
Item Dimensions
Height 10
Width 25
Length 29
Weight 21.12
Bestseller No. 5

Lucas Oil 10299-PK4 Synthetic 15W-40 CJ-4 Truck Oil - 1 Gallon Jug, Pack of 4

Popularity Score 9.6
Quality Score 8.9
Sentiment Score 9.4

Highlighted Features

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

Additional Info :

Brand Lucas
Color Silver
Item Dimensions
Height 5
Width 24
Length 31
Weight 19.12
Bestseller No. 6

Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil (1 Gallon, Single Pack)

Popularity Score 9.1
Quality Score 9.3
Sentiment Score 9.1

Highlighted Features

  • 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

Additional Info :

Brand Shell
Color Multicolor
Item Dimensions
Height 15
Width 28
Length 23
Weight 76.03
SaleBestseller No. 7

Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle

Popularity Score 9.4
Quality Score 9.5
Sentiment Score 9.2

Highlighted Features

  • 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.

Additional Info :

Brand Schaeffer
Color Silver
Item Dimensions
Height 14
Width 36
Length 44
Weight 61.84
Bestseller No. 8

Triax Fleet Supreme ESP 15W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum and Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail)

Popularity Score 9.8
Quality Score 9.7
Sentiment Score 9.7

Highlighted Features

  • CRP organic, metallic, Moly plating technology for unsurpassed wear protection, oxidation, and high temp stability
  • Friction modified and VI stabilizer pre-boosted; un-rivaled turbo-charger protection; will not create deposits and ash on turbo bearings (will not fry on the turbo)
  • Contains state-of-the-art dispersal and ash control systems to keep your engine extremely clean
  • Extreme drain intervals capabilities; 25,000-mile drain interval for pickups and 80,000 for class 8 semi-trucks
  • Eliminates the need to clean diesel particulate filters and is for use in virtually all diesel-powered pickups and heavy-duty trucks, both pre 2007 and post 2007 models fitted with emission control systems

Additional Info :

Brand Triax
Color Grey
Item Dimensions
Height 14
Width 35
Length 42
Weight 99.35
Bestseller No. 9

Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil (1-Gallon, Case of 3)

Popularity Score 9.2
Quality Score 9
Sentiment Score 9.4

Highlighted Features

  • Synthetic blend 10W-30 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown, and improves low-temperature flow
  • Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress
  • Formulated with advanced additive technology for enhanced deposit control and superior engine cleanliness throughout the oil drain interval
  • Fuel economy savings up to 2 percent compared to a conventional 15W-40, helping you stretch your budget and improve your bottom line
  • Provides better cold cranking properties and better low temperature pumpability than conventional 15W-40

Additional Info :

Brand Shell
Color Black
Item Dimensions
Height 16
Width 41
Length 43
Weight 41.86
Bestseller No. 10

AC Delco dexosD Light Duty Diesel Motor Oil 0W-20 Synthetic Motor Oil, 7 Quarts fits 3.0 Diesel engine

Popularity Score 9.1
Quality Score 9.6
Sentiment Score 9.1

Highlighted Features

  • 7 Quarts of Oil
  • Oil Type: Synthetic
  • Viscosity Grade: SAE 0W-20
  • Quantity: 7 bottles
  • OEM Approvals: GM dexosD

Additional Info :

Brand AC
Color Multicolor
Item Dimensions
Height 12
Width 40
Length 25
Weight 45.51
Bestseller No. 11

Factory Racing Oil SAE 15W-40 Synthetic Blend Diesel Engine Oil - API CK-4-5 Gallon (2x2.5 Gal)

Popularity Score 9.2
Quality Score 9.2
Sentiment Score 9.2

Highlighted Features

  • FULLY CERTIFIED AND MEETS OEM SPECIFICATIONS - Factory Racing Parts was born from expertise and credibility. We put in the work to make sure you are getting the right viscosity and certifications to meet warranty for your engine.
  • SPECIFICATONS: SAE 15W-40, API CK-4/CJ-4/CI-4, produced in an ISO9001-2015 quality certified facility. Look it up if you’re bored.

Additional Info :

Brand Factory
Color Grey
Item Dimensions
Height 10
Width 40
Length 25
Weight 64.37
SaleBestseller No. 12

Shell Rotella T6 Full Synthetic Multi-Vehicle 5W-30 Diesel Engine Oil (1-Gallon, Case of 3)

Popularity Score 9.1
Quality Score 9.8
Sentiment Score 9.6

Highlighted Features

  • Full synthetic 5W-30 engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves high/low temperature performance
  • Performs extremely well in both diesel and gasoline engines, allowing mixed fleet customers to consolidate lubricants
  • Enhanced fuel economy capability of 2.8 percent, helping to deliver fuel savings without compromising engine protection or durability (compared to conventional SAE 15W-40 oils)
  • Increased shear stability for better viscosity control and optimal engine oil pressure
  • Strong oxidation protection helps to minimize the formation of acids and oil thickening, resulting in a longer, cleaner engine life

Additional Info :

Brand Shell
Color Black
Item Dimensions
Height 2
Width 37
Length 38
Weight 98.09
Bestseller No. 13

Valvoline Premium Blue SAE 10W-30 Diesel Engine Oil 1 GA, Case of 3

Popularity Score 8.9
Quality Score 9.6
Sentiment Score 9

Highlighted 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

Additional Info :

Brand Valvoline
Color Grey
Item Dimensions
Height 19
Width 25
Length 25
Weight 88.3
Bestseller No. 14

Mobil 1 122260 5W-40 Turbo Diesel Synthetic Motor Oil - 1 Gallon (Pack of 3)

Popularity Score 9.7
Quality Score 9.1
Sentiment Score 9.8

Highlighted Features

  • 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

Additional Info :

Brand Mobil
Color Grey
Item Dimensions
Height 14
Width 27
Length 42
Weight 99.23
Bestseller No. 15

15W40 CK-4 Synthetic Diesel Engine Oil - 55 Gallon Drum

Popularity Score 8.9
Quality Score 9.5
Sentiment Score 9.8

Highlighted Features

  • This item does NOT ship to residential, home business or farm addresses, please scroll down to confirm shipping details prior to purchase.
  • Sinopec Diesel Engine Oil TULUX T700 Synthetic CK-4 is formulated using synthetic high viscosity index group 3 base oils and Superior low SAPS additive packages. It is the new generation of DEO to meet strict new emission, long life protection performance and fuel economy and environmental standards. Suitable for use in high speed, four-stroke heavy duty low-emission diesel engines fitted with exhaust after-treatment systems designed to meet Euro V and Euro VI exhaust emissions standards.
  • Certifications: API CK-4, SN, ACEA E9 E7, Military Specification MIL-PRF2104K; ACEA E7-12; ACEA E9-12; Global Specification DHD-1; Caterpillar ECF-3; Cummins CES 20081, CES 20086; Detroit Diesel Power Guard Oil Specifications: DDC93K218 and DDC93K222; Deutz DQC III-10 LA; Ford WSS-M2C171-E, WSS-M2C171-F1; JASO DH-2; Mack EO-O Premium Plus, Mack EOS4.5; MAN 3275, MAN 3575; MB 228.31; MTU 2.1; Renault VI RLD-3, RLD-4; Volvo VDS 4, VDS 4.5; Navistar;
  • Pack Size: 55 Gallon Drum (200L Volume)

Additional Info :

Brand W
Color Silver
Item Dimensions
Height 17
Width 42
Length 42
Weight 59.24
Bestseller No. 16

Hot Shot's Secret Green Diamond 100 Percent Synthetic 15W40 Oil Diesel 1 Gallon

Popularity Score 9.1
Quality Score 9.3
Sentiment Score 9

Highlighted Features

  • Hot Shot's Secret Green Diamond uses a unique blend of Group III base oils to improve your engine's fuel economy by up to 3 percent; specialized blend gives Green Diamond formula excellent viscosity and reduces friction
  • By improving fuel economy and reducing wear, Green Diamond Fleet Oil lowers your engine's overall fuel consumption by up to 78 percent compared to CJ-4 spec oils
  • Compared to CJ-4 spec oils, Green Diamond Fleet Oil reduces wear and tear on your engine's components by 71 percent; synthetic oil product keeps your engine free from scarring so it can run like new
  • Green Diamond Fleet Oil uses patented FR3 nanotechnology lubrication with CK4 Additive packaging to keep your oil clean and increase your horsepower; 15W-40 engine oil excels in vehicles subjected to demanding operating conditions
  • Patented FR3 nanotechnology gets into the fine crevices of your engine to create smooth, slick surfaces that minimize metal-on-metal contact for the longest possible service life

Additional Info :

Brand Hot
Color Black
Item Dimensions
Height 16
Width 38
Length 39
Weight 49.13
Bestseller No. 17

Liqui Moly 2022 Diesel High Tech Synthetic 5W-40 Motor Oil - 5 Liter

Popularity Score 9.3
Quality Score 9.4
Sentiment Score 9.6

Highlighted Features

  • Low SAPS fully synthetic motor oil for older generation diesel engines in passenger vehicles.
  • Specifically developed for engines equipped with diesel particulate filters (DPF).
  • 5 Liter
  • Item Package Weight: 10.44 pounds

Additional Info :

Brand Liqui
Color Off-white
Item Dimensions
Height 11
Width 25
Length 21
Weight 84.89
SaleBestseller No. 18

Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil (1-Quart, Single Pack)

Popularity Score 9.6
Quality Score 9.6
Sentiment Score 9.4

Highlighted Features

  • Better fuel economy - compared to 15W-40 oils Rotella offers enhanced fuel economy capability of 1.5% without compromising engine protection or durability
  • Improved wear performance - provides a significantly increased level of protection against harmful engine wear when compared to previous generation API CJ-4 engine oils
  • Improved deposit control - advanced multi-functional dispersant additives in combination with synthetic base oils provide an enhanced level of protection against the effects of soot, dirt and other contaminants
  • Emissions system compatibility - advanced low-ash formulation helps control blocking of or poisoning of exhaust after-treatment devices, helping maintain vehicle emission compliance and engine fuel efficiency
  • Improved heat resistance - resists breakdown by heat to provide continuous protection throughout the service interval

Additional Info :

Brand Shell
Color Off-white
Item Dimensions
Height 11
Width 39
Length 40
Weight 15.22
Bestseller No. 19

Schaeffer 10W-30 Full Synthetic Diesel Engine Oil

Popularity Score 9.1
Quality Score 9.3
Sentiment Score 9.8

Highlighted Features

  • Schaeffer 10W-30 Synthtic Diesel Engine Oil

Additional Info :

Brand Schaeffer
Color White
Item Dimensions
Height 15
Width 45
Length 34
Weight 86.06
Bestseller No. 20

Shell Rotella T6 Full Synthetic Heavy Duty Engine Oil 5W-40, 1 Gallon, Pack of 3

Popularity Score 9.6
Quality Score 9.2
Sentiment Score 8.9

Highlighted Features

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

Additional Info :

Brand Shell
Color Unknown
Item Dimensions
Height 9
Width 34
Length 35
Weight 72.58

What To Look Before Buying Best synthetic oil for diesel engines

When it comes to choosing the best synthetic oil for diesel engines for you, it is important to consider several factors. The cost of the synthetic oil for diesel engines the materials used to make it, its durability, customer ratings, and the warranty or return policy are all important factors to consider.

Cost

Cost is, of course, an important factor. You want to find a synthetic oil for diesel engines that is affordable, but also one that will last. It is important to find a balance between the two.

Materials

The materials used to make the synthetic oil for diesel engines are also important. You want to make sure that the synthetic oil for diesel engines is made from high-quality materials that will last. Also, consider the environment when choosing materials. You may want to choose a synthetic oil for diesel engines that is made from recycled materials.

Durability

Durability is another important factor. You want to choose a synthetic oil for diesel engines that will last a long time. Consider how often you will use the synthetic oil for diesel engines and how it will be used. If you are looking for a synthetic oil for diesel engines to use every day, you will want something that is very durable.

Customer Ratings

Customer ratings are also important. You want to read reviews of the synthetic oil for diesel engines before you purchase it. This will give you an idea of how others feel about the synthetic oil for diesel engines.

Warranty/Return Policy

Finally, consider the warranty or return policy. You want to make sure that you are covered in case the synthetic oil for diesel engines does not meet your expectations. Many synthetic oil for diesel enginess come with a warranty or return policy, so be sure to read the fine print before you make your purchase.

Why Are Online Stores Beneficial To Consumers?

There are many reasons to shop online. Here are just a few:

  1. You can shop from the comfort of your own home.
  2. You can avoid crowds at the mall.
  3. You can compare prices more easily.
  4. You can find items that are not available in your local stores.
  5. You can have items delivered to your door.
  6. You can shop at any time of day or night.
  7. You can often find better deals online than you can in local stores.
  8. You can usually find coupon codes for additional savings.
  9. You can read customer reviews before making a purchase.
  10. You can save money on gas.

Are warranties and guarantees the same thing?

When it comes to warranties and guarantees, there are a few key differences that you should be aware of. A warranty is typically provided by a manufacturer and is a promise to repair or replace an synthetic oil for diesel engines if it proves to be defective within a certain timeframe. A guarantee, on the other hand, is usually offered by the retailer or service provider and promises to refund or exchange an synthetic oil for diesel engines if the customer is not satisfied.

In general, warranties are more comprehensive than guarantees, covering a wider range of potential problems. However, they also tend to be more expensive, as the manufacturer bears the cost of repairs or replacements. Guarantees, on the other hand, are usually less expensive for the customer, but they may not cover as many different types of defects.

When choosing between a warranty and a guarantee, it is important to consider your needs and budget. If you are concerned about a particular issue, such as a manufacturer’s defect, then a warranty may be the best option. However, if you are looking for more general protection against problems, then a guarantee may be a better choice.

FINAL THOUGHTS

In the end, we believe you will love every synthetic oil for diesel engines. But we wanted to make sure that you saw some of our favorites as well so that you can come with a well-informed decision. To sum up, here is what we liked about these products:

They are known for their durability and high-quality performance. Their price tag is also low compared with other brands in the market today. Just make sure to shop around before making your final purchase!

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