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AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil

Product code : ASMQTC-EA

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, in ASTM D6891 as required by the API SN specification.
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.

AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil



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)

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

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.

Test results from AMSOIL against leading competitor in 100,000-mile test.

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.

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

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.

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.

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.

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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AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil

Performance Studies

Data Bulletin

Data Bulletins (English)
Data Bulletins (Français)

Warranty

SDS



AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil

  • 5 star rating
    Great stuff
    By  CAROL,  a  Verified Buyer  from  Lakefield   on  March 03, 2024
    We have been using Amsoil since 1989 and have not looked back. Because we have so many Kim’s to drive it is nice not having to change your oil every month it’s just once a year along with the proper amsoil oil filter they go hand in hand
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great snowblower oil
    By  PAT,  a  Verified Buyer  from  Ut  on  March 02, 2024
    This oil is the best oil for a snowblower across various temperature ranges.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Lab results don't lie!
    By  BRENT,  a  Verified Buyer  on  March 02, 2024
    I have seen the oil analysis sheets for this product compared to others and if you want the best for your engine, this is it. By a large margin.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil
    By  Tom,  a  Verified Buyer  from  VaBeach  on  March 02, 2024
    Great oil. 25k between oil changes. My engine knows the difference
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amazing
    By  DUSTIN,  a  Verified Buyer  on  March 02, 2024
    Once again, amazing product. I've never experienced such a dramatic decrease in the sound of the engine. Ticks and clicks went away, sound is much more quiet, and everything is far smoother during excelleration.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amazing Products
    By  DUSTIN,  a  Verified Buyer  on  March 02, 2024
    I've been a car guy since the day I was born. I've built cars, restored cars, you name it. I've never experienced such a severe change in the sound of an engine just from changing the oil. My wife's Honda CRV ran like a normal Honda, little ticks and clicks that naturally happen from an engine. Nothing wrong with it, it's brand new, just your everyday sounds. But once I changed the oil, using AMSOIL Signature, the sound of the engine dramatically decreased, no more ticks and clicks, and the excelleration of the vehicle is so much smoother.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    100% A plus
    By  EDWARD,  a  Verified Buyer  from  San Pedro  on  March 01, 2024
    Been using AMSOIL for quite some time. I have a Honda, valves need adjusting every 15k miles. I find no staining of the aluminum, no sludge or wear of the camshaft - 126k. I can’t argue with that.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Product
    By  LOGAN,  a  Verified Buyer  on  February 29, 2024
    I would highly recommend Amsoil to any motorsports/car enthusiasts! First thing that caught my eye about their oil was their pride in not only the research and development, but the customer service too. I've been using their SAE 5w-30 for years now and have never had an issue. And I am very meticulous about taking care of my engines. My order usually processes and ships within a day or two. One thing that I find inconvenient is they are usually out of stock of my oil filter, so I have to out source for it. But it's not a big issue to me
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I wish....
    By  ROBERT,  a  Verified Buyer  from  Florida  on  February 29, 2024
    Great products, been using them for years. However, it seems lately that I get a free shipping offer within a day or two of placing an order. Once or twice may be coincidence, but its very consistent lately. Enough so that I may be buying my oil locally from now own. js.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Amsoil signature series 5w-30
    By  LARRY,  a  Verified Buyer  from  Florida   on  February 29, 2024
    Best oil on the market in my opinion ! Used in all my vehicles and motorcycles
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?