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20 Best Oil For Duramax Lb7 (2022 Updated)

Oil is a vital component of any engine, and the duramax lb7 is no exception. Not only does oil lubricate the engine’s moving parts, it also helps to keep the engine cool by dissipating heat. Over time, oil will break down and lose its effectiveness, so it is important to change the oil regularly in order to keep the engine in good working order.

20 Best Oil For Duramax Lb7

Product Image Product Name Features Price

Mobil 1 122260 5W40 Turbo Diesel Oil – 1 Gal – Case of 3

  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
  • Outstanding wear protection

Shell Rotella T T6 Full Synthetic Heavy Duty Engine Diesel Oil 5W-40, 1 Gallon …

  • Advanced low-ash formulation which helps control blocking of or poisoning of exhaust after treatment devices.
  • Shell Rotella T6 5W-40 provides excellent low-temperature flow, even at -30˚f.

Mobil1 123875 ESP Formula Engine Oil 0W-40 (6 Quarts)

  • Reduce particulate buildup in diesel particulate filters
  • Reduce poisoning of gasoline catalytic converters
  • Reduce deposits and sludge buildup to enable long and clean engine life

Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil – 5 Liter

  • Long engine service life due to high level of protection against wear, mixable and compatible with commercially-available engine oils

Mobil 15W-40 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil – 2.5 Gal

  • Oxidation performance superior to most conventional oils
  • Excellent anti-wear and anti-scuff properties
  • Extended drains beyond conventional oils

Motorcraft Super Duty Diesel Motor 15W-40 5 qt Engine Oil

  • Help protect critical parts from wear
  • Help reduce performance robbing sludge and deposits
  • Meet Ford specifications and recommended for all Ford, Lincoln and Mercury vehicles

Mobil 1 5W40 Turbo Diesel Oil 1 Quart

  • Is recommended for diesel-powered pickup trucks built by Ford, General Motors, GMC and Dodge
  • Meets CJ-4, CI-4, and CH-4
  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean

Castrol GTX Diesel Motor Oil, 15W40, 1 Gallon

  • Model : 15AD8F
  • Country : US

Mobil Delvac 112786 1300 Super 15w-40 Motor Oil – 1 gal jug

  • Reduced oil consumption
  • Superior low-temperature sludge control in stop-and-go service
  • Outstanding control of high-temperature deposits and oil oxidation

Mobil 1 122492 15W40 Diesel Oil – 1 Gal – Case of 4

  • Designed to deliver trouble-free, consistent performance
  • Right for your vehicle and lifestyle
  • Made from high-quality materials for ultimate durability

Mobil Synthetic Engine Oil – 1 quart bottle

  • Excellent fuel economy benefits
  • Improved protection against sludge and harmful deposits
  • Excellent high- and low-temperature performance

Sierra 25W40 Oil – 5 qt

  • Formulated To Provide Excellent Lubrication And Corrosion Protection
  • Stern Drive And Inboard Engines Operate Under High Load And Running Stresses

Mobil Delvac 1 ESP Heavy Duty Full Synthetic Diesel Engine Oil 5W-40, 5 Gal

  • Outstanding thermal and oxidation stability
  • Enhanced film strength at high temperatures
  • Inherent stay-in-grade shear stability

Shell Oil 550019919 Rotella T Triple Protection 15W-40 Weight Diesel Oil – 2.5 gal

  • Acid control helps protect against corrosion from acids formed as fuel burns and the oil ages.
  • Deposit control helps keep engines clean for optimum performance and long life.

Warren Distribution Delo 400LE SAE 15W-40 Heavy Duty Motor Oil – 1 gal jug

  • Engine and Motor Oils Conventional, Size 1 gal, Container Type.
  • Engine and Motor Oils Bottle, SAE Grade.
  • Engine and Motor Oils 15W-40, Color Amber, Flash Point 204 Degrees C, Specific Gravity 0.
Mobil 1 122260 5W40 Turbo Diesel Oil – 1 Gal – Case of 3
  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
  • Outstanding wear protection
Shell Rotella T T6 Full Synthetic Heavy Duty Engine Diesel Oil 5W-40, 1 Gallon …
  • Advanced low-ash formulation which helps control blocking of or poisoning of exhaust after treatment devices.
  • Shell Rotella T6 5W-40 provides excellent low-temperature flow, even at -30˚f.
Mobil1 123875 ESP Formula Engine Oil 0W-40 (6 Quarts)
  • Reduce particulate buildup in diesel particulate filters
  • Reduce poisoning of gasoline catalytic converters
  • Reduce deposits and sludge buildup to enable long and clean engine life
Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil – 5 Liter
  • Long engine service life due to high level of protection against wear, mixable and compatible with commercially-available engine oils
Mobil 15W-40 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil – 2.5 Gal
  • Oxidation performance superior to most conventional oils
  • Excellent anti-wear and anti-scuff properties
  • Extended drains beyond conventional oils
Motorcraft Super Duty Diesel Motor 15W-40 5 qt Engine Oil
  • Help protect critical parts from wear
  • Help reduce performance robbing sludge and deposits
  • Meet Ford specifications and recommended for all Ford, Lincoln and Mercury vehicles
Mobil 1 5W40 Turbo Diesel Oil 1 Quart
  • Is recommended for diesel-powered pickup trucks built by Ford, General Motors, GMC and Dodge
  • Meets CJ-4, CI-4, and CH-4
  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
Castrol GTX Diesel Motor Oil, 15W40, 1 Gallon
  • Model : 15AD8F
  • Country : US
Mobil Delvac 112786 1300 Super 15w-40 Motor Oil – 1 gal jug
  • Reduced oil consumption
  • Superior low-temperature sludge control in stop-and-go service
  • Outstanding control of high-temperature deposits and oil oxidation
Mobil 1 122492 15W40 Diesel Oil – 1 Gal – Case of 4
  • Designed to deliver trouble-free, consistent performance
  • Right for your vehicle and lifestyle
  • Made from high-quality materials for ultimate durability
Mobil Synthetic Engine Oil – 1 quart bottle
  • Excellent fuel economy benefits
  • Improved protection against sludge and harmful deposits
  • Excellent high- and low-temperature performance
Sierra 25W40 Oil – 5 qt
  • Formulated To Provide Excellent Lubrication And Corrosion Protection
  • Stern Drive And Inboard Engines Operate Under High Load And Running Stresses
Mobil Delvac 1 ESP Heavy Duty Full Synthetic Diesel Engine Oil 5W-40, 5 Gal
  • Outstanding thermal and oxidation stability
  • Enhanced film strength at high temperatures
  • Inherent stay-in-grade shear stability
Shell Oil 550019919 Rotella T Triple Protection 15W-40 Weight Diesel Oil – 2.5 gal
  • Acid control helps protect against corrosion from acids formed as fuel burns and the oil ages.
  • Deposit control helps keep engines clean for optimum performance and long life.
Warren Distribution Delo 400LE SAE 15W-40 Heavy Duty Motor Oil – 1 gal jug
  • Engine and Motor Oils Conventional, Size 1 gal, Container Type.
  • Engine and Motor Oils Bottle, SAE Grade.
  • Engine and Motor Oils 15W-40, Color Amber, Flash Point 204 Degrees C, Specific Gravity 0.

1. Mobil 1 122260 5W40 Turbo Diesel Oil – 1 Gal – Case of 3

Mobil 1 122260 5W40 Turbo Diesel Oil - 1 Gal - Case of 3

  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
  • Outstanding wear protection
  • Improved protection against sludge and harmful deposits; Excellent fuel economy benefits

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Sold By Price
Amazon.com – Seller
eBay – speedway_motors
Speedway Motors
Tweetys RV and Truck Accessories

Product Details

Specifications

Details
Weight 24.02 oz

Reviews From Real Customers

rlbumich
Jeffes4500

2. Shell Rotella T T6 Full Synthetic Heavy Duty Engine Diesel Oil 5W-40, 1 Gallon …

Shell Rotella T T6 Full Synthetic Heavy Duty Engine Diesel Oil 5W-40, 1 Gallon ...

  • Advanced low-ash formulation which helps control blocking of or poisoning of exhaust after treatment devices.
  • Shell Rotella T6 5W-40 provides excellent low-temperature flow, even at -30˚f.
  • Rotella T6 5W-40 synthetic oil resists viscosity loss through shear and will maintain optimal oil pressure in the engine.

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Walmart – LEPS Consumer Goods
Petroleum Service Company

Product Details

Specifications

Details
Size 1 Gallon

3. Mobil1 123875 ESP Formula Engine Oil 0W-40 (6 Quarts)

Mobil1 123875 ESP Formula Engine Oil 0W-40 (6 Quarts)

  • Reduce particulate buildup in diesel particulate filters
  • Reduce poisoning of gasoline catalytic converters
  • Reduce deposits and sludge buildup to enable long and clean engine life
  • Reduce oil aging, allowing extended drain interval protection

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Walmart – 1185 Straight Path Corp
Newegg.com – 1185 Marketplace

Product Details

Specifications

Details
Size 6 quarts

Reviews From Real Customers

KRS
Loyd
Bobv

4. Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil – 5 Liter

Liqui Moly 2332 Leichtlauf High Tech 5W-40 Engine Oil - 5 Liter

  • Long engine service life due to high level of protection against wear, mixable and compatible with commercially-available engine oils
  • Outstanding engine cleanliness, tested with catalytic converters and performance proved with turbochargers
  • Saves fuel and reduces pollutant emission; Optimum oil pressure at all engine speeds, high shear and ageing stability

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Amazon.com
eBay
Walmart
FCP Euro

Product Details

Specifications

Details
Weight 10 lb

5. Rotella 550036271 Diesel Motor Oil-Rotella T6,5 gal.,0W-40

Rotella 550036271 Diesel Motor Oil-Rotella T6,5 gal.,0W-40

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Amazon.com – Seller
eBay – db99dorian

Product Details

Specifications

Details
Package Dimensions 16.5 x 12 x 12 inches
Viscosity 0W-40

Reviews From Real Customers

Rainmagic

6. Mobil 1 5W-40 Turbo Diesel Truck Motor Oil, 1 gal.

Mobil 1 5W-40 Turbo Diesel Truck Motor Oil, 1 gal.

Product Details

Specifications

Details
Oil Type Synthetic
Oil Weight 5W40
API Rating CK-4

7. Mobil 15W-40 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil – 2.5 Gal

Mobil 15W-40 1300 Super Heavy Duty Synthetic Blend Diesel Engine Oil - 2.5 Gal

  • Oxidation performance superior to most conventional oils
  • Excellent anti-wear and anti-scuff properties
  • Extended drains beyond conventional oils
  • Stay-in-grade shear stability protects engine parts at high operating temperatures and reduces oil consumption

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
Advance Auto Parts

Product Details

Specifications

Details
Part Type Engine Oil
Oil Type Semi-synthetic
Oil Weight 15W40
ZDDP Enhanced No
API Rating CK-4

8. Motorcraft Super Duty Diesel Motor 15W-40 5 qt Engine Oil

Motorcraft Super Duty Diesel Motor 15W-40 5 qt Engine Oil

  • Help protect critical parts from wear
  • Help reduce performance robbing sludge and deposits
  • Meet Ford specifications and recommended for all Ford, Lincoln and Mercury vehicles
  • Help contribute to improved fuel economy

Check Latest Price

Sold By Price
Amazon
Walmart
AutoZone

Product Details

Specifications

Details
Package Size 160. oz
Oil Type Diesel Engine Oil
Standards API Service CJ-4/SM
Flash Point 441 °F
SAE Oil Weight 15W40

9. Mobil 1 5W40 Turbo Diesel Oil 1 Quart

Mobil 1 5W40 Turbo Diesel Oil 1 Quart

  • Is recommended for diesel-powered pickup trucks built by Ford, General Motors, GMC and Dodge
  • Meets CJ-4, CI-4, and CH-4
  • Exceptional resistance to high-temperature varnish and low-temperature sludge deposits to help keep engines clean
  • Meets diesel engine requirements of Cummins, Powerstroke, Duramax and Navistar

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Item is Shipped at this Packaging Level N
Information Effective Date 4/7/2011
Layers Per Pallet 6
Packaging Depth 2.43 IN

Reviews From Real Customers

5.9 Cummins
MacAttackKamaaina
Ron25

10. Castrol GTX Diesel Motor Oil, 15W40, 1 Gallon

Castrol GTX Diesel Motor Oil, 15W40, 1 Gallon

  • Model : 15AD8F
  • Country : US

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Sold By Price
Amazon
eBay
Walmart
Tractor Supply Company

Product Details

Specifications

Details
Viscosity Grade 10W-30
Automotive Part Type Engine Oil
Container type Bottle
General Part Type Engine Oil
Number Of Units In Package 3

11. 5W-40 Signature Series Max-Duty Synthetic Diesel Oil in 2.5 Gallon Jug by AMSOIL | DEOTP-EA

5W-40 Signature Series Max-Duty Synthetic Diesel Oil in 2.5 Gallon Jug by AMSOIL | DEOTP-EA

Product Details

12. Mobil Delvac 112786 1300 Super 15w-40 Motor Oil – 1 gal jug

Mobil Delvac 112786 1300 Super 15w-40 Motor Oil - 1 gal jug

  • Reduced oil consumption
  • Superior low-temperature sludge control in stop-and-go service
  • Outstanding control of high-temperature deposits and oil oxidation
  • Reduced low temperature sludge build-up and high temperature deposits
  • Greater engine efficiency, long engine life and long oil life

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
Tractor Supply Company

Product Details

Specifications

Details
Units in Package 1
Unit Size 3.78 gal
Warnings Caution: Continuous contact with uses motor oil has caused skin cancer in animal tests. Avoid prolonged contact. Wash skin thoroughly with soap and water. Launder or discard soiled clothes.

13. Mobil 1 122492 15W40 Diesel Oil – 1 Gal – Case of 4

Mobil 1 122492 15W40 Diesel Oil - 1 Gal - Case of 4

  • Designed to deliver trouble-free, consistent performance
  • Right for your vehicle and lifestyle
  • Made from high-quality materials for ultimate durability
  • Manufactured to meet or exceed strict quality requirements

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Amazon
eBay
BJ’s Wholesale Club
Sam’s Club

Product Details

Specifications

Details
Size 1 Gallon (128 Ounces), (Case of 4)

14. Mobil Synthetic Engine Oil – 1 quart bottle

Mobil Synthetic Engine Oil - 1 quart bottle

  • Excellent fuel economy benefits
  • Improved protection against sludge and harmful deposits
  • Excellent high- and low-temperature performance
  • Outstanding wear protection

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
NAPA Auto Parts

Product Details

Specifications

Details
Units in Package 1
Unit Size 1 qt
Warnings Caution : Continuous contact with used motor oil has caused skin cancer in laboratory animals. in case of contact, wash throughly with soap and water.

15. Sierra 25W40 Oil – 5 qt

Sierra 25W40 Oil - 5 qt

  • Formulated To Provide Excellent Lubrication And Corrosion Protection
  • Stern Drive And Inboard Engines Operate Under High Load And Running Stresses
  • This Product Is Developed For The Marine Enviroment And Will Out Perform Standard 4 Cycle Automotive Engine Oils
  • Offers Excellent Detergency Anti-Oxidants Antiwear And Corrosion Protection
  • The Benefits To Your Engine Are Reduced Wear To The Internal Components Protection Of Internal Parts From C

Product Details

Specifications

Details
Part Type Engine Oil
Oil Type Mineral
Oil Weight 25W40
ZDDP Enhanced No
API Rating CF-2

Reviews From Real Customers

GARY B.
Kevin H.

16. Sinopec 15W40 Synthetic Diesel Engine Oil – 5 Gallon Pail (18l – 4.75 gal)

Sinopec 15W40 Synthetic Diesel Engine Oil - 5 Gallon Pail (18l - 4.75 gal)

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Walmart

Product Details

17. Mobil Delvac 1 ESP Heavy Duty Full Synthetic Diesel Engine Oil 5W-40, 5 Gal

Mobil Delvac 1 ESP Heavy Duty Full Synthetic Diesel Engine Oil 5W-40, 5 Gal

  • Outstanding thermal and oxidation stability
  • Enhanced film strength at high temperatures
  • Inherent stay-in-grade shear stability
  • Advanced formulation and viscometrics

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Sold By Price
Amazon
JEGS High Performance
TheLubricantStore.com

Product Details

Specifications

Details
Part Type Engine Oil
Oil Type Synthetic
Oil Weight 5W40
ZDDP Enhanced No
API Rating CK-4

Reviews From Real Customers

Cygnus
Bigcat99
Katie K

18. Pennzoil 10-W40 Motor Oil, 5 qt.

Pennzoil 10-W40 Motor Oil, 5 qt.

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Home Depot
Ace Hardware

Product Details

Specifications

Details
Viscosity Grade 10W-40
Automotive Part Type Engine Oil
Container type Bottle
General Part Type Engine Oil
Number Of Units In Package 1
Viscosity index 155
Volume (fl. oz.) 160
Product Width (in.) 8.20 in

19. Shell Oil 550019919 Rotella T Triple Protection 15W-40 Weight Diesel Oil – 2.5 gal

Shell Oil 550019919 Rotella T Triple Protection 15W-40 Weight Diesel Oil - 2.5 gal

  • Acid control helps protect against corrosion from acids formed as fuel burns and the oil ages.
  • Deposit control helps keep engines clean for optimum performance and long life.
  • Wear control helps keep moving metal engine surfaces apart for a longer life.

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Amazon
eBay
Walmart
Blain’s Farm & Fleet

Product Details

Specifications

Details
Container Size 2.5gal
Oil Class Diesel Engine
SAE Oil Weight 15W-40
Flash Point 400.0Deg. F
Oil Composition Conventional

Reviews From Real Customers

Carla
NormB
Patrick

20. Warren Distribution Delo 400LE SAE 15W-40 Heavy Duty Motor Oil – 1 gal jug

Warren Distribution Delo 400LE SAE 15W-40 Heavy Duty Motor Oil - 1 gal jug

  • Engine and Motor Oils Conventional, Size 1 gal, Container Type.
  • Engine and Motor Oils Bottle, SAE Grade.
  • Engine and Motor Oils 15W-40, Color Amber, Flash Point 204 Degrees C, Specific Gravity 0.

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Amazon
Walmart
AutoZone
NAPA Auto Parts

Product Details

Specifications

Details
Units in Package 1
Unit Size 1 gl
Directions CK-4 API Service: Compatible with API Service Category: CJ-4, CI-4 Plus and all prior categories.
Warnings Warning: Keep out of reach of children. Avoid prolonged or repeated contact with used motor oil. Wash thoroughly after handling.

Conclusion

The LB7 Duramax was introduced in 2001 and produced until 2004. It was the first Duramax engine produced and was replaced by the LLY in 2004. The LB7 is considered to be one of the most reliable Duramax engines ever produced.

Many owners of LB7 trucks have reported high mileage with little to no issues. The only common issue with the LB7 is injector failure, which can be caused by a number of factors such as contaminated fuel, poor maintenance, or extended idling.

Injector replacement can be expensive, but many owners feel it is worth it to keep their LB7 running strong.

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