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AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel OilQuart Bottle
Product code : ADPQT-EA
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AMSOIL 15W-40 Heavy-Duty 100% Synthetic Diesel OilQuart Bottle
Product code : ADPQT-EA
Current price:
$12.99
Retail Price
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Estimated delivery by Wed, Nov 18
to Columbus - 43215.
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- Delivers 4X more wear protection1
- Minimizes oil consumption
- Excels in extreme temperatures
- Helps keep trucks and equipment operating at peak performance
- Offers outstanding value
1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation
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We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
-
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
About this item
-
Developed to provide protection beyond conventional, synthetic-blend and other synthetic oils. AMSOIL synthetic technology delivers heavy-duty protection for diesel enthusiasts and those who depend on their trucks and equipment to make a living.
See the Product Data Bulletin for full details.
HEAVY-DUTY ENGINE PROTECTION
- Delivers 4X more wear protection1
- Helps maximize equipment life
- Helps reduce maintenance costs and downtime
1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation
Delivers More Wear Protection
Third-party testing shows Heavy-Duty Synthetic Diesel Oil delivers 4X more protection against wear than required by Detroit Diesel’s* standard.I
IBased on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation. *All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.
VISCOSITY CONTROL
- Resists oxidation and the thickening effects of soot contamination
- Retains viscosity after high-temperature service for added engine protection and increased fuel economy
- Provides up to 66 percent less oil consumption2
2Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test
Reduces Oil Consumption
Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.L
![Reduces Oil Consumption – Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.]( "Reduces Oil Consumption – Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.")
L Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.
EXCELS IN EXTREME TEMPERATURES
- Provides outstanding protection and performance in hot and cold temperature extremes
- Delivers improved heat and oxidation resistance compared to conventional diesel oils
- Flows dependably in cold temperatures for easier startup and improved engine protection
-
Data Bulletin
Literature Sample
Warranty
SDS
-
-
star rating
Great oilBy JAMES, a Verified Buyer on November 11, 2026Great productBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
OilBy ROBERT, a Verified Buyer from Wells River, VT on November 04, 2026Excellent oil for price and performanceBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Premium Oil at a Great PriceBy ANDREW, a Verified Buyer from Ontario on November 03, 2026I am using this oil on my 2012 S175 Bobcat Skid Steer. Very confident that this oil is a premium product versus the standard Bobcat oil. Price with a membership is excellent and fast/free delivery to my door is super convenient.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ConvenientBy SEAN, a Verified Buyer on November 02, 2026Usually purchase the 2.5 gallon jugs for my old 5.9 Cummins but the f350 6.7 takes 15 quarts. So I use one 2.5 gallon, one 1 gallon and one qt per oil change. The quarts are also handy when topping off once in a while.Was this review helpful?
-
star rating
Great productBy ETHAN, a Verified Buyer on October 28, 2026Absolutely best oil Iv usedBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
10w30By NICHOLAS, a Verified Buyer from Fort Nelson on October 24, 2026Amazing products Best on the marketBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
15w40By NICHOLAS, a Verified Buyer from Fort Nelson on October 24, 2026Best fluids on the market in my opinion Love being a member Great prices and great shipping servicesBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Always on time!By COREY, a Verified Buyer on October 23, 2026Amazing service, I have made 15-20 online orders and product has always arrived in less than 4 days.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy KEVIN R, a Verified Buyer on October 21, 2026i have been using this in my 2000 Ford F350 for18 years odometer 382738Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Consumption in DuramaxBy THOMAS, a Verified Buyer from New York on October 19, 202650k miles on my 2017 duramax. Always used factory mobile delvac without issues. It did raise my oil pressure but that's where the positivity ends...This oil last 2 changes burned a quart in 5000 miles. Never had a consumption issue. Also gave the engine typewriter tick phenomenon bad for first 500 miles.... I love these oils. Use it everything. Im giving it a 3rd try and then returning to delvac if situation persists.Bottom LineNo, I would not recommend this to a friend.Was this review helpful?
-
star rating
Data Bulletins-
- Delivers 4X more wear protection1
- Minimizes oil consumption
- Excels in extreme temperatures
- Helps keep trucks and equipment operating at peak performance
- Offers outstanding value
1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation
-
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
-
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
-
Developed to provide protection beyond conventional, synthetic-blend and other synthetic oils. AMSOIL synthetic technology delivers heavy-duty protection for diesel enthusiasts and those who depend on their trucks and equipment to make a living.
See the Product Data Bulletin for full details.
HEAVY-DUTY ENGINE PROTECTION
- Delivers 4X more wear protection1
- Helps maximize equipment life
- Helps reduce maintenance costs and downtime
1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation
Delivers More Wear Protection
Third-party testing shows Heavy-Duty Synthetic Diesel Oil delivers 4X more protection against wear than required by Detroit Diesel’s* standard.I
IBased on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation. *All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.
VISCOSITY CONTROL
- Resists oxidation and the thickening effects of soot contamination
- Retains viscosity after high-temperature service for added engine protection and increased fuel economy
- Provides up to 66 percent less oil consumption2
2Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test
Reduces Oil Consumption
Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.L
![Reduces Oil Consumption – Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.]( "Reduces Oil Consumption – Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.")
L Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.
EXCELS IN EXTREME TEMPERATURES
- Provides outstanding protection and performance in hot and cold temperature extremes
- Delivers improved heat and oxidation resistance compared to conventional diesel oils
- Flows dependably in cold temperatures for easier startup and improved engine protection
-
Data Bulletin
Literature Sample
Warranty
SDS
-
-
star rating
Great oilBy JAMES, a Verified Buyer on November 11, 2026Great productBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
OilBy ROBERT, a Verified Buyer from Wells River, VT on November 04, 2026Excellent oil for price and performanceBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Premium Oil at a Great PriceBy ANDREW, a Verified Buyer from Ontario on November 03, 2026I am using this oil on my 2012 S175 Bobcat Skid Steer. Very confident that this oil is a premium product versus the standard Bobcat oil. Price with a membership is excellent and fast/free delivery to my door is super convenient.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ConvenientBy SEAN, a Verified Buyer on November 02, 2026Usually purchase the 2.5 gallon jugs for my old 5.9 Cummins but the f350 6.7 takes 15 quarts. So I use one 2.5 gallon, one 1 gallon and one qt per oil change. The quarts are also handy when topping off once in a while.Was this review helpful?
-
star rating
Great productBy ETHAN, a Verified Buyer on October 28, 2026Absolutely best oil Iv usedBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
10w30By NICHOLAS, a Verified Buyer from Fort Nelson on October 24, 2026Amazing products Best on the marketBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
15w40By NICHOLAS, a Verified Buyer from Fort Nelson on October 24, 2026Best fluids on the market in my opinion Love being a member Great prices and great shipping servicesBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Always on time!By COREY, a Verified Buyer on October 23, 2026Amazing service, I have made 15-20 online orders and product has always arrived in less than 4 days.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy KEVIN R, a Verified Buyer on October 21, 2026i have been using this in my 2000 Ford F350 for18 years odometer 382738Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Consumption in DuramaxBy THOMAS, a Verified Buyer from New York on October 19, 202650k miles on my 2017 duramax. Always used factory mobile delvac without issues. It did raise my oil pressure but that's where the positivity ends...This oil last 2 changes burned a quart in 5000 miles. Never had a consumption issue. Also gave the engine typewriter tick phenomenon bad for first 500 miles.... I love these oils. Use it everything. Im giving it a 3rd try and then returning to delvac if situation persists.Bottom LineNo, I would not recommend this to a friend.Was this review helpful?
-
star rating
