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AMSOIL Signature Series 0W-16 100% Synthetic Motor OilQuart Bottle
Product code : AZSQT-EA
AMSOIL Signature Series 0W-16 100% Synthetic Motor OilQuart Bottle
Product code : AZSQT-EA
Current price:
$17.99
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A New Level of Motor Oil Technology
- 75% more engine protection against horsepower loss and wear.1
- 50% more cleaning power vs. AMSOIL OE Motor Oil
- Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
- 28% more acid-neutralizing power than Mobil 1.3
- Trusted by professional engine builders
- Guaranteed protection for up to 25,000 miles or 1 year
1Based on independent testing of AMSOIL Signature Series 0W-20 using the ASTM D6891 standard test.
2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
3Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased in July 2020. -
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
-
Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.
See the Product Data Bulletin for full details.
Fights Engine Wear
- 75 percent more engine protection against horsepower loss and wear1 than required by the industry standard, extending the life of vital components like pistons and cams.
- Develops a strong fluid film that keeps metal surfaces separated.
- Robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life.
1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
Signature Series Improves Startup Protection
AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup.PP
ASTM D5293 cold Crank (Lower = Better)
AMSOIL Signature Series(5W-30) Royal Purple High Performance (5W-30) Lucas (5W-30) Driven LS30 (5W-30) Red Line High Performance (5W-30) Royal Purple HPS (5W-30) Cranking Viscosity (㎫ —s) 3800 4500 5000 5750 6100 6100 PPBased on independent third-party testing in the industry-standard ASTM D5293 Cold Crank Simulator test as required by SAE J300.
*Trademark 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.
Signature Series Fights Wear
75% more engine protection against horsepower loss and wear.A
Sequence IVA Engine Test - Lower Number = Less Wear
Industry Standard AMSOIL Signature Series 0W-20 Synthetic Motor Oil Average Cam Wear 90 20.28 ABased on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
Signature Series Delivers Powerful Protection
AMSOIL delivers powerful protection. How good is it? An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test.P AMSOIL provided far superior wear protection and kept bearings looking like new.
PTesting conducted in an independent lab using AMSOIL Signature Series 5W-30 Synthetic Motor Oil and a leading synthetic-blend 5W-30 motor oil in Ford F-150 trucks with 3.5L twin-turbo engines.
Signature Series Protects Against LSPI
AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI.B
![Piston damage due to an LSPI event observed during the testing of a competitor's motor oil.]( "Piston damage due to an LSPI event observed during the testing of a competitor's motor oil.")
Example of piston damage due to an LSPI event observed during the testing of a competitor’s motor oil. The red arrows indicate sections of the ring land that have broken away from the piston.
BBased on zero LSPI events in five consecutive tests of AMSOIL Signature Series, XL and OE 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.
Signature Series Resists Viscosity Increase
Signature Series is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard.GG
Sequence IIIH Engine Test - Lower number = better viscosity control
Industry Standard AMSOIL 1X AMSOIL 2X Viscosity Increase % 100% 0.1% 49.6% GGBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.
Signature Series Helps Keep Engines Cleaner
- Fortified with a heavy treatment of detergent additives, delivering 28% more acid-neutralizing power than Mobil 1* and helping engines stay cleaner, longer.LL
- 50% more detergentsD to help keep oil passages clean and promote oil circulation.
- Controls heat and minimizes performance-robbing deposits.
- Superior thermal durability that resists breakdown and keeps pistons clean.
- Provides 90% better protection against sludge.DD
![Oil pick-up tube screen showing it's virtually free of sludge.]( "Oil pick-up tube screen showing it's virtually free of sludge.")
The oil pick-up tube screen is virtually free of sludge.
LLBased upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased July 2020.
Dvs. AMSOIL OE Motor Oil
DDBased on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.
Signature Series Guards Turbos
Protects turbochargers 72% better than requiredC by the GM dexos1* Gen 2 specification.
![Part from turbocharger.]( "Part from turbocharger.")
CBased on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
Keeps Pistons Cleaner
Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard.FF
![Piston 40% cleaner from using AMSOIL.]( "Piston 40% cleaner from using AMSOIL.")
FFBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.
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star rating
AMSOIL Synthetic oil 0-20By GREGORY, a Verified Buyer from Midwest USA on August 18, 2026The product exceeded my expectations.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
So far so goodBy SAMUEL, a Verified Buyer from NW Connecticut on August 18, 2026Jeep engine seems to run smoother & quieter than before. Wll probably change @ 15K instead of pushing it to 25K. Definitely beats changing oil in December, January or FebruaryWas this review helpful?
-
star rating
2019 Ford Explorer platinum 3.5L dual turbo.By FRANK, a Verified Buyer from Ottawa, Canada on August 18, 2026Slightly better gas mileage. Small tuck,tick engine noise gone. Seems to idle smoother. Like the added protection it gives as gleaned from Ai reviews. Will update review in the winterBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Why something else ?By PAUL, a Verified Buyer from Québec on August 18, 2026This is the best, why settle for less. Lives to its promises.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best Oil I have used!By BRAD, a Verified Buyer from Northern Michigan on August 18, 2026I have used Amsoil products for well over 2 decades and in many different vehicles. They always perform extremely well and are unmatched in their field for providing the best protection for their various uses. I generally buy previously-owned vehicles and use Amsoil from that point forward. It provides longer life for the vehicle and I have a much lower incidence of the need for engine repair.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Don't pass upBy MR10K, a Verified Buyer from INDY on August 18, 2026If your wondering or undecided purchase the product the fits/works with your vehicle it'll be awesome decision. I was told from Jeffy Lude years back that oil doesn't matter LIES. One oil change with AMSOIL will make you wanna slap yo pappy. I've used it on a GMC TERRAIN AND CHRYSLER PACIFICA both notice instance changes in performance my God. I'll never use another brand oil. We'll only in emergency situations. If you purchase the oil but don't install yourself Jeffy will use your own oil if you ask i do it all the time there when I'm feeling lazy.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Excellent OilBy SAM, a Verified Buyer from CA on August 17, 2026Excellent oil and works great for all my vehicles. Just wish they had the oil filters in stock and not on a long back order.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best decisionBy KRISTIN, a Verified Buyer from Kansas City on August 17, 2026I started using this oil just recently and was introduced to it by a coworker. This oil is hands down the best decision I’ve made for maintaining my truck. This product has tremendously improved my gas mileage, and my truck runs so much better. I will be a returning customer for as long as I own vehicles. If you’re on the fence, just do it. You won’t regret the decision. I even started using the oil in my lawn equipment!!!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Unsurpassed excellenceBy Andy, a Verified Buyer from Northern VA on August 16, 2026I am a user of Amsoil products for over 20 years and they always surpass my expectations. Increased mileage and reduced wear. I have no problems running my cars over 150,000 miles without having any mechanical problems. They provide a tremendous return on my investment. Not interested in using any other brand of lubricants for any of my gas powered equipment.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
mrBy THEODORE, a Verified Buyer from 53081 on August 15, 2026awsome productBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Compare Motor Oil
Data Bulletin-
A New Level of Motor Oil Technology
- 75% more engine protection against horsepower loss and wear.1
- 50% more cleaning power vs. AMSOIL OE Motor Oil
- Protects turbochargers 72% better than required2 by the GM dexos1 Gen 2 specification.
- 28% more acid-neutralizing power than Mobil 1.3
- Trusted by professional engine builders
- Guaranteed protection for up to 25,000 miles or 1 year
1Based on independent testing of AMSOIL Signature Series 0W-20 using the ASTM D6891 standard test.
2Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
3Based upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased in July 2020. -
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.
-
Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.
See the Product Data Bulletin for full details.
Fights Engine Wear
- 75 percent more engine protection against horsepower loss and wear1 than required by the industry standard, extending the life of vital components like pistons and cams.
- Develops a strong fluid film that keeps metal surfaces separated.
- Robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life.
1Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
Signature Series Improves Startup Protection
AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup.PP
ASTM D5293 cold Crank (Lower = Better)
AMSOIL Signature Series(5W-30) Royal Purple High Performance (5W-30) Lucas (5W-30) Driven LS30 (5W-30) Red Line High Performance (5W-30) Royal Purple HPS (5W-30) Cranking Viscosity (㎫ —s) 3800 4500 5000 5750 6100 6100 PPBased on independent third-party testing in the industry-standard ASTM D5293 Cold Crank Simulator test as required by SAE J300.
*Trademark 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.
Signature Series Fights Wear
75% more engine protection against horsepower loss and wear.A
Sequence IVA Engine Test - Lower Number = Less Wear
Industry Standard AMSOIL Signature Series 0W-20 Synthetic Motor Oil Average Cam Wear 90 20.28 ABased on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.
Signature Series Delivers Powerful Protection
AMSOIL delivers powerful protection. How good is it? An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test.P AMSOIL provided far superior wear protection and kept bearings looking like new.
PTesting conducted in an independent lab using AMSOIL Signature Series 5W-30 Synthetic Motor Oil and a leading synthetic-blend 5W-30 motor oil in Ford F-150 trucks with 3.5L twin-turbo engines.
Signature Series Protects Against LSPI
AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI.B
![Piston damage due to an LSPI event observed during the testing of a competitor's motor oil.]( "Piston damage due to an LSPI event observed during the testing of a competitor's motor oil.")
Example of piston damage due to an LSPI event observed during the testing of a competitor’s motor oil. The red arrows indicate sections of the ring land that have broken away from the piston.
BBased on zero LSPI events in five consecutive tests of AMSOIL Signature Series, XL and OE 5W-30 Motor Oil in the LSPI engine test required by the GM dexos1 Gen 2 specification.
Signature Series Resists Viscosity Increase
Signature Series is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard.GG
Sequence IIIH Engine Test - Lower number = better viscosity control
Industry Standard AMSOIL 1X AMSOIL 2X Viscosity Increase % 100% 0.1% 49.6% GGBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.
Signature Series Helps Keep Engines Cleaner
- Fortified with a heavy treatment of detergent additives, delivering 28% more acid-neutralizing power than Mobil 1* and helping engines stay cleaner, longer.LL
- 50% more detergentsD to help keep oil passages clean and promote oil circulation.
- Controls heat and minimizes performance-robbing deposits.
- Superior thermal durability that resists breakdown and keeps pistons clean.
- Provides 90% better protection against sludge.DD
![Oil pick-up tube screen showing it's virtually free of sludge.]( "Oil pick-up tube screen showing it's virtually free of sludge.")
The oil pick-up tube screen is virtually free of sludge.
LLBased upon independent testing of Mobil 1 Annual Protection Full Synthetic 5W-30 and AMSOIL Signature Series 5W-30 in ASTM D2896. Oils purchased July 2020.
Dvs. AMSOIL OE Motor Oil
DDBased on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.
Signature Series Guards Turbos
Protects turbochargers 72% better than requiredC by the GM dexos1* Gen 2 specification.
![Part from turbocharger.]( "Part from turbocharger.")
CBased on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
Keeps Pistons Cleaner
Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard.FF
![Piston 40% cleaner from using AMSOIL.]( "Piston 40% cleaner from using AMSOIL.")
FFBased on independent testing of AMSOIL Signature Series 5W-30 in the Sequence IIIH Engine Test (ASTM D8111), required by the ILSAC GF-6 and API SP specifications.
-
-
-
star rating
AMSOIL Synthetic oil 0-20By GREGORY, a Verified Buyer from Midwest USA on August 18, 2026The product exceeded my expectations.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
So far so goodBy SAMUEL, a Verified Buyer from NW Connecticut on August 18, 2026Jeep engine seems to run smoother & quieter than before. Wll probably change @ 15K instead of pushing it to 25K. Definitely beats changing oil in December, January or FebruaryWas this review helpful?
-
star rating
2019 Ford Explorer platinum 3.5L dual turbo.By FRANK, a Verified Buyer from Ottawa, Canada on August 18, 2026Slightly better gas mileage. Small tuck,tick engine noise gone. Seems to idle smoother. Like the added protection it gives as gleaned from Ai reviews. Will update review in the winterBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Why something else ?By PAUL, a Verified Buyer from Québec on August 18, 2026This is the best, why settle for less. Lives to its promises.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best Oil I have used!By BRAD, a Verified Buyer from Northern Michigan on August 18, 2026I have used Amsoil products for well over 2 decades and in many different vehicles. They always perform extremely well and are unmatched in their field for providing the best protection for their various uses. I generally buy previously-owned vehicles and use Amsoil from that point forward. It provides longer life for the vehicle and I have a much lower incidence of the need for engine repair.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Don't pass upBy MR10K, a Verified Buyer from INDY on August 18, 2026If your wondering or undecided purchase the product the fits/works with your vehicle it'll be awesome decision. I was told from Jeffy Lude years back that oil doesn't matter LIES. One oil change with AMSOIL will make you wanna slap yo pappy. I've used it on a GMC TERRAIN AND CHRYSLER PACIFICA both notice instance changes in performance my God. I'll never use another brand oil. We'll only in emergency situations. If you purchase the oil but don't install yourself Jeffy will use your own oil if you ask i do it all the time there when I'm feeling lazy.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Excellent OilBy SAM, a Verified Buyer from CA on August 17, 2026Excellent oil and works great for all my vehicles. Just wish they had the oil filters in stock and not on a long back order.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best decisionBy KRISTIN, a Verified Buyer from Kansas City on August 17, 2026I started using this oil just recently and was introduced to it by a coworker. This oil is hands down the best decision I’ve made for maintaining my truck. This product has tremendously improved my gas mileage, and my truck runs so much better. I will be a returning customer for as long as I own vehicles. If you’re on the fence, just do it. You won’t regret the decision. I even started using the oil in my lawn equipment!!!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Unsurpassed excellenceBy Andy, a Verified Buyer from Northern VA on August 16, 2026I am a user of Amsoil products for over 20 years and they always surpass my expectations. Increased mileage and reduced wear. I have no problems running my cars over 150,000 miles without having any mechanical problems. They provide a tremendous return on my investment. Not interested in using any other brand of lubricants for any of my gas powered equipment.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
mrBy THEODORE, a Verified Buyer from 53081 on August 15, 2026awsome productBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
