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AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil
Product code : AZOQT-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 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.
AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil
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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
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
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.
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
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.
AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil
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AMSOIL Signature Series 0W-30 100% Synthetic Motor Oil
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Top Quality and Excellent ServiceBy JERRY, a Verified Buyer on June 21, 2025I have been a mechanic for 40 years. I have done a lot of research on motor oil. I have always been skeptical of claims made by oil companies and additive manufacturers. I swear my vehicles run better while using Amsoil and I see an improvement in fuel economy. I couldn’t believe Amsoil would make a difference in how my vehicles ran and thought it was all in my mind. I did an oil change on my wife’s truck and didn’t realize that I didn’t have enough Amsoil to complete the oil change. I had another brand of oil and used it instead. I didn’t tell my wife what had happened but she told me her truck was not running the same. I did another oil change as soon as I replenished my stock of Amsoil and she immediately noticed the difference. Her truck is an F150 5 litre that now has 420000km on it and has never been apart. It has the original timing chains and cam phasers. I think that speaks volumes about my choice of oil. Amsoil’s service is second to none as well. My orders are almost always delivered next day. This review isn’t just for the 5w30 signature series oil. I run the 5w20 in the 5 litre F150 and 5w30 in my Ecoboost. I use the 0w16 in my daughter’s Toyota Camry also. I also run Amsoil in my 3 motorcycles and ATVs. I highly recommend Amsoil products.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Nice!!!By GEORGE, a Verified Buyer on June 20, 2025This is the best! I will use this from now onBottom LineYes, I would recommend this to a friend.Was this review helpful?
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New oil for a new to me muscle carBy JOHN, a Verified Buyer from Newfoundland on June 20, 2025I recently purchased a new to me 1999 SLP Firehawk and this oil was recommended to use. Pricing was great and shipping was fast. Great oil and great service.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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BestBy DEREK, a Verified Buyer on June 18, 2025Runs like new againBottom LineYes, I would recommend this to a friend.Was this review helpful?
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What is to review when it's THE BEST on the market.By SCOTT, a Verified Buyer on June 18, 2025Amsoil technologies have been the benchmark that is driving the other brands to step up. Simply said....Amsoil performs. It is tested and proven to perform better than all others. I trust and use Amsoil in all of my vehicles.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Signature Top of the lineBy KELLY, a Verified Buyer on June 17, 2025Fast delivery service. Top of the line oil for My Hemi. Have used Amsoil in every engine I have since 2002 from Harley's to lawnmowers to Hemi's, also so far I've NEVER had the Hemi tick and I credit it to Amsoil...Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Best Motor Oil in the marketBy EDWARD, a Verified Buyer from Los Angeles on June 17, 2025I never thought in my life how much a quality motor oil can make a huge difference to my car. I have used Mobil 1, Castrol, Supertech, Kirkland, which all of them did the minimal job its supposed to do, keep my car operating and no sludge. However, the moment I used Amsoil Signature Series, my car has not only been getting benefits of protection but my engine has been revitalized where it feels lile it has no friction. My mpg has drastically improved by 10+ mpg. I have now learned the difference between 100% synthetic and full synthetic. Despite the upfront cost, it is actually a free motor oil compared to buying any other brand. I have saved more money through gas mileage that it makes up more than enough for my car. This oil exemplifies the saying of being cheap is more expensive. Better to buy the best oil and save more in the long run than buying a cheap oil that will cost you more down the line through gas mileage and possibly engine wear.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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In Honda direct injection,By JOHN, a Verified Buyer from Western Fredonia on June 17, 2025My two Honda vehicles love this oil! Runs smooth, and engines seem more efficient as my fuel mpg is now (25.0 mpg). 2024 Honda Ridgeline. My wife’s 2022 Honda CRV turbo runs incredibly smooth, and is getting 36.0 mpg. This is the only oil going in our engines.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Signature seriesBy SPENCER, a Verified Buyer on June 17, 2025A friend recommended this for my Toyota tundra. He said it made his engine quieter. I changed to this oil and immediately on start up my engine was noticeably quieter and better protection.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
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Amsoil Signature Series 0W-20 Motor oilBy JAMES, a Verified Buyer from Fallon, Nevada on June 16, 2025Been using Amsoil Signature Series 0W-20 for Years. When I bought my 2020 Toyota Tacoma new , been using Amsoil Signature every oil change once a year. The weather here in Nevada, in summer it Hot! Hot! Hot! In winter it Cold! Cold! Cold! This oil is outstanding!!!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
