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AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil

Product code : AMRQT-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 5W-50 100% 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 5W-50 100% Synthetic Motor Oil

Data Bulletin

Warranty

SDS



AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil

  • 5 star rating
    Mopar, baby.
    By  BEN,  a  Verified Buyer  from  Southern Illinois  on  April 13, 2024
    Quick shipping, solid American made product. I've been a customer for years. Ram 4x4 hemi.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Efficient!
    By  LEE,  a  Verified Buyer  from  Highland, Ca  on  April 12, 2024
    Order was here quick and correct
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    awesome as usual!
    By  SEAN,  a  Verified Buyer  from  Oak Hill, WV  on  April 12, 2024
    above all expectations with this 0/40 for my Z06 Corvette!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  JASON,  a  Verified Buyer  from  NW Ohio  on  April 11, 2024
    Awesome product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    WOW! UNEXPECTED RESULTS
    By  MUGENIZER,  a  Verified Buyer  from  Vancouver  on  April 11, 2024
    I was using Pennzoil Ultra Platinum 0W-20 Full Synthetic for my Honda Pilot 2016 exl with 261K km in it. Obvious crackcase noise & lifter noise. Fuel consumption of 12.9 liters per 100km. Now with using Amsoil Signature Series 0W-20 Full Synthetic...noise in the crankcase & lifters are a lot less. My fuel consumption is now 11.8 liters per 100km. The engine run smoother than it was. I wish i've used Amsoil ever since. Now, i use it in every vehicle i own. I highly recommend this product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Increased fuel mileage consistently.
    By  RICHARD,  a  Verified Buyer  from  Rockwell, NC  on  April 11, 2024
    I run the Signature series Amsoil in all my family vehicles. I change my daughters vehicles every year and the Ecoboost every 7,000 miles. I consistently see a 10% increase in interstate fuel mileage when converting over to Amsoil. Protect your investment with Amsoil products, you will be glad you did. A small cost to pay for peace of mind and protection. My Tacoma and my F150 all have over 250,000 miles and neither use more than 1/2 qt oil in 7,000 miles. The daughters cars typically log around 12,000 to 16,000 miles per year and most of their cars have over 200,000 miles. Switching to Amsoil typically results in less oil consumption due to the thermal stability alone. Great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  DAN,  a  Verified Buyer  from  CT  on  April 10, 2024
    Reliable product. Quality and have been pleased with impact on a variety of different vehicles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good oil, thanks
    By  EDUARDO,  a  Verified Buyer  from  Sebring fl  on  April 10, 2024
    Thanks
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  RYAN,  a  Verified Buyer  on  April 09, 2024
    This oil gives me the confidence others don't
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    shortage
    By  GRIFFITH,  a  Verified Buyer  on  April 09, 2024
    Love Amsoil products.shorted me 2 qts of oil. They took care of it though.Had to find another dealer to finish oil change.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?