☰
Roll over image to zoom in
AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil
Product code : MCVQT-EA
- 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.
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
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.
AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil
Data Bulletin
Data BulletinsWarranty
SDS
AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle Oil
-
star rating
Amsoil V-TwinBy ROBERT, a Verified Buyer from Laguna Hills,CA on July 11, 2025I have been using Amsoil in my Harleys since 2004, running in cold and extreme heat. Bottom line I trust it can’t ask for more than that.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great productBy MrD, a Verified Buyer from American Canyon CA on July 11, 2025I’ve been a Harley mechanic for over 40 years and used all of the top name brand oils out there. Besides using Harley’s conventional 20/50 oil for new motor break ins, I haven’t found a better oil than AMSOIL Synthetic 20/50 for “after break in” use. I’ve pulled down motors ran on AMSOIL and the parts after thousands of miles show very little wear. I’m such a fan that I switched my diesel, my Porsche and my wife’s Grand Cherokee over to AMSOIL.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great product!By JACK, a Verified Buyer on July 10, 2025After daunting research about oil, decided to go with Amsoil. Glad I did, could tell an immediate difference. Not going back to the “old stuff!”Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best oil on the marketBy GILLES, a Verified Buyer from Gatineau on July 10, 2025I have been using Amsoil products for a few years and all of my clients truly live it. They often comment on how better their Harley run since the switch to Amsoil!Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ExcellentBy Ric, a Verified Buyer from Québec on July 09, 2025Parfait pour mon HarleyBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great priceBy DANIEL, a Verified Buyer from Alliance Ohio on July 09, 2025I’ve been using these kits for my bikes for years and you can’t beat the price compared with buying individual quarts and plus you get the correct oil filter and the replacement O rings needed for the change.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great ProductBy K, a Verified Buyer on July 08, 2025Found it was a noticeable upgrade from the previous fluid. That being said the previous fluid was what was in it when I got the bike and was due for a change. Shifts slight but noticeable improvement in feel and sound.Was this review helpful?
-
star rating
Easy to orderBy NELSON, a Verified Buyer on July 07, 2025Easy to order. Arrived in a timely manner.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Best Synthetic for Harley’sBy ZAK, a Verified Buyer from Nevada on July 06, 2025This is hands-down, the best oil you can run in your Harley Davidson for protection, longevity, and good wear and mileage . I’ve been using it for years and my older bike and my newer bike five stars always. 😎👍🏼🏁Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
OilBy JASON, a Verified Buyer on July 05, 2025The only oil I use in my motorcycleBottom LineYes, I would recommend this to a friend.Was this review helpful?
