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AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

Product code : MCVQT-EA

5 star rating
Read 1,362 reviews
Read 1,362 reviews

  • Resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.1
  • Resists extreme heat to help keep engines clean and efficient.
  • Reduces wear and deposits for maximum engine compression and power.
  • Convenience of one lubricant for all three sumps.

    *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.
    1Based on testing of AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil and Harley-Davidson Screamin’ Eagle SYN3 purchased on 1/26/24 in the CEC L45-KRL, ASTM D445 test.

Product Overview

AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil



Engineered for maximum performance in V-twin engines, motorcycle transmissions and primary chaincases. Protects against extreme heat. Wet-clutch compatible. Advanced synthetic formulation resists viscosity loss to keep critical components clean and protected.

See the Product Data Bulletin for full details.

REDUCES WEAR & DEPOSITS

  • Resists viscosity breakdown 6X better than Harley-Davidson SYN3 for improved protection against compensator and transmission gear wear.1
  • Contains heavy treatment of anti-wear additives to reduce wear in the most extreme operating conditions.
  • Fortified with maximum levels of oxidation inhibitors to fight deposits for maximum engine compression and power.

Resists Viscosity Breakdown

AMSOIL resists viscosity breakdown 6X better than Harley-Davidson SYN3 for improved protection against compensator and transmission gear wear.1

AMSOIL Resists Viscosity Breakdown six times better than Harley-Davidson SYN3 for improved protection against compensator and transmission gear wear.

1Based on testing of AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil and Harley-Davidson Screamin’ Eagle SYN3 purchased on 1/26/24 in the CEC L45-KRL, ASTM D445 test.

 

 

WITHSTANDS EXTREME HEAT

  • Formulated with naturally heat-resistant synthetic base oils that resist oxidation in extreme summer heat and during strenuous stop-and-go rally or parade traffic.
  • Unique additive system helps keep engines clean and running efficiently in the toughest riding conditions.
  • Prevented piston-ring sticking and protected against piston scuffing after 1,000 miles (1,609 km) of extreme-heat dyno testing during which cylinder temperatures reached 421°F (216°C) (see video below).
 

 

PROTECTS TRANSMISSIONS & PRIMARIES

  • Shear-stable formulation resists thinning from mechanical activity to protect transmissions and primaries from wear.
  • Performs like a gear lube without the negative effects of extreme-pressure additives.
  • Delivers the convenience of one lubricant for all three sumps.

TRUSTED BY PROFESSIONALS

AMSOIL Synthetic V-Twin Motorcycle Oil is the top choice of hardcore riders everywhere. Here’s what some have to say.

 

 

See the Product Data Bulletin for full details.

*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.

Technical Specification

AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

Data Bulletin

Warranty

SDS



Product Reviews

AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil

5 star rating
Based on 1,362 reviews
Based on 1,362 reviews
See all customer reviews
  • 5 star rating
    Amsoil
    By  TODD,  a  Verified Buyer  on  June 23, 2025
    Good oil used it for years no issues
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Huile synthétique
    By  moi,  a  Verified Buyer  from  Québec   on  June 22, 2025
    Parfait pour mon Harley
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best oil your money can buy !!!
    By  JORGE,  a  Verified Buyer  from  Florida. U.S.A.  on  June 20, 2025
    Been using this oil in my bike and never have any problem !!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Kit!
    By  motoman247,  a  Verified Buyer  from  North Carolina  on  June 18, 2025
    Great kit that makes it easy, comes with extras that make life better!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The right product on time
    By  Jay,  a  Verified Buyer  from  Canada   on  June 12, 2025
    Once I heard this was one of the few oils left with significant zinc content my Yamaha cruiser needs I was sold. Ordered fast and delivered fast. A1
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best oil ever
    By  EDWARD,  a  Verified Buyer  from  Venus, TX  on  June 11, 2025
    I’ve been using AMSoil since a little after it’s inception into the market and I will not go back to any other oils, providing AMSoil stays in business. I use it in all my vehicles, car truck & motorcycle. When I had a gas powered mower, I even used the used oil in my lawn equipment. Needless to say I’m a huge fan and when I did start using it, they had a replacement warranty on any oil related failure. I don’t know if they still have that warranty, but I’ll keep using their oil anyway. Also, when you’re a preferred customer the price is very competitive.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The best
    By  STEVEN,  a  Verified Buyer  from  Massachusetts  on  June 11, 2025
    Better shifting transmission quieter running engine what's not to like about Amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil 20W-50 100 Synthetic Motorcycle Oil
    By  WILLIAM,  a  Verified Buyer  from  Las Vegas  on  June 10, 2025
    Outstanding, quality oil for those who want keep their motorcycle motors running longer due to specs that exceed manufacturers standards.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Harley oil
    By  OSCAR,  a  Verified Buyer  from  Nakusp, BC Canada  on  June 10, 2025
    My go to oil for my 2010 Fatboy Lo. I like the product as I only need to change my oil once a year and my Harley really likes that oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Engine, Transmission, Primary Oil All-In-One
    By  BootCampBob,  a  Verified Buyer  from  Upstate New York  on  June 10, 2025
    I've been running a 2022 Indian Challenger 108 Cu In V-Twin on this oil since new / break-in. The bike now has 15,467 miles on it. Indian Motorcycles use engine oil for the clutch / transmission and primary lubrication, as well as the engine, unlike another American V-Twin maker that uses separate fluids for each, so the demand on this oil is critical for Indians. I wouldn't use this oil if it didn't out-perform everything else on the market. Not only does the engine run quieter than when using other oils (including the manufacturer's branded product, and these engines are known for being noisy), the transmission shifts easier as well. I've used AMSOIL Signature Blend in my high performance cars and truck since 2008 with similar results. Using AMSOIL V-Twin Formula 15W60 was an easy decision for my Indian. It hasn't disappointed a bit.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?