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AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle OilQuart Bottle

Product code : MCVQT-EA

4.9 star rating
Read 1,736 reviews

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AMSOIL 20W-50 100% Synthetic V-Twin Motorcycle OilQuart Bottle

Product code : MCVQT-EA

4.9 star rating
Read 1,736 reviews
Current price:
$18.49
Retail Price

Estimated delivery by Wed, Nov 18 to La Crosse - 54601.

    • 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.

  • We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

  • We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

About this item

  • 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.

  • Data Bulletin

    Warranty

    SDS



  • 4.9 star rating
    Based on 1,736 reviews
    See all customer reviews
    • 5 star rating
      Cooler running motor
      By  TOBY,  a  Verified Buyer  on  November 14, 2026
      Highly recommend over syn 3. Much cooler running road glide. No more inner thigh heat from engine.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Great Choice for Harley Davidson
      By  BobT,  a  Verified Buyer  from  Boston  on  November 14, 2026
      Switched to Amsoil on my 23 RGS after the 1st 1000 miles service. Been using Amsoil Oil, Transmission and Primary fluid since. Now have 61,500 miles and have the oil analyzed every 10K miles. Average 4500 miles per oil change and results show no oil degradation and no contaminates, excess metals, minerals, etc. Switched because I run all year in New England weather from 10F to 100F and typically my engine would run up to 374F during heavy use in warm weather. The detergent package keeps the engine clean and running great. I'm a Chemical/ Polymer Engineer with 40 years industrial experience and researched this product before switching. Now I switched my buddies to Amsoil and they have same results.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Harely Davidson oil
      By  VINCENT,  a  Verified Buyer  from  west texas  on  November 10, 2026
      best oil for the region that we live in, Hot 8 months out of the year
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Confidense
      By  Bobber,  a  Verified Buyer  from  Helena  on  November 07, 2026
      Glad my internal metal surfaces protected against corrosion during 3 months of winter storage.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Great price
      By  JEAN,  a  Verified Buyer  from  Calgary Alberta  on  November 06, 2026
      Great price and speedy shipment , I received my order in 2 days which I was not expecting to received that quick which was awesome because I really needed to do the oil change on my Harley to go on a road trip . I have been promoting your services and prices to my friends. Thanks Jean
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Amsoil only for my Bike
      By  JAMES,  a  Verified Buyer  from  Lakewood, CA  on  November 06, 2026
      only Amsoil all 3 holes always. My review of all available oils concluded to use Amsoil. So I do. If you want your bike to preform and last you should too.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Quality
      By  NATHANIEL,  a  Verified Buyer  from  Auburn Indiana   on  November 05, 2026
      I run amsoil in my M8 and Twin Cam knowing I have the best oil for my Harleys
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Makes oil changes easy as dumping one bottle
      By  CARL,  a  Verified Buyer  from  San Diego  on  November 04, 2026
      It easier for me to dump one of these in then going quart by quart.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Vintage Machine Savior
      By  Fresh,  a  Verified Buyer  from  Garden Ridge Texas  on  November 03, 2026
      I've been using AMSOIL since I acquired this motorcycle 11 years ago. I've gotten exceptional results. No metal in my oil and the bike runs very good. It's a 23 year old motorcycle. I'm really pleased.
      Was this review helpful?
    • 5 star rating
      The Best
      By  JACK,  a  Verified Buyer  from  West TN  on  November 02, 2026
      This kit, like all the AmsOil products I use, is of the highest quality. I use nothing but AmsOil lubricants in my Harley’s, Mercury outboard, ATV and UTV.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?

    • 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.

  • We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.

  • We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.

  • 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.

  • Data Bulletin

    Warranty

    SDS



  • 4.9 star rating
    Based on 1,736 reviews
    See all customer reviews
    • 5 star rating
      Cooler running motor
      By  TOBY,  a  Verified Buyer  on  November 14, 2026
      Highly recommend over syn 3. Much cooler running road glide. No more inner thigh heat from engine.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Great Choice for Harley Davidson
      By  BobT,  a  Verified Buyer  from  Boston  on  November 14, 2026
      Switched to Amsoil on my 23 RGS after the 1st 1000 miles service. Been using Amsoil Oil, Transmission and Primary fluid since. Now have 61,500 miles and have the oil analyzed every 10K miles. Average 4500 miles per oil change and results show no oil degradation and no contaminates, excess metals, minerals, etc. Switched because I run all year in New England weather from 10F to 100F and typically my engine would run up to 374F during heavy use in warm weather. The detergent package keeps the engine clean and running great. I'm a Chemical/ Polymer Engineer with 40 years industrial experience and researched this product before switching. Now I switched my buddies to Amsoil and they have same results.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Harely Davidson oil
      By  VINCENT,  a  Verified Buyer  from  west texas  on  November 10, 2026
      best oil for the region that we live in, Hot 8 months out of the year
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Confidense
      By  Bobber,  a  Verified Buyer  from  Helena  on  November 07, 2026
      Glad my internal metal surfaces protected against corrosion during 3 months of winter storage.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Great price
      By  JEAN,  a  Verified Buyer  from  Calgary Alberta  on  November 06, 2026
      Great price and speedy shipment , I received my order in 2 days which I was not expecting to received that quick which was awesome because I really needed to do the oil change on my Harley to go on a road trip . I have been promoting your services and prices to my friends. Thanks Jean
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Amsoil only for my Bike
      By  JAMES,  a  Verified Buyer  from  Lakewood, CA  on  November 06, 2026
      only Amsoil all 3 holes always. My review of all available oils concluded to use Amsoil. So I do. If you want your bike to preform and last you should too.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Quality
      By  NATHANIEL,  a  Verified Buyer  from  Auburn Indiana   on  November 05, 2026
      I run amsoil in my M8 and Twin Cam knowing I have the best oil for my Harleys
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Makes oil changes easy as dumping one bottle
      By  CARL,  a  Verified Buyer  from  San Diego  on  November 04, 2026
      It easier for me to dump one of these in then going quart by quart.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?
    • 5 star rating
      Vintage Machine Savior
      By  Fresh,  a  Verified Buyer  from  Garden Ridge Texas  on  November 03, 2026
      I've been using AMSOIL since I acquired this motorcycle 11 years ago. I've gotten exceptional results. No metal in my oil and the bike runs very good. It's a 23 year old motorcycle. I'm really pleased.
      Was this review helpful?
    • 5 star rating
      The Best
      By  JACK,  a  Verified Buyer  from  West TN  on  November 02, 2026
      This kit, like all the AmsOil products I use, is of the highest quality. I use nothing but AmsOil lubricants in my Harley’s, Mercury outboard, ATV and UTV.
      Bottom Line
      Yes, I would recommend this to a friend.
      Was this review helpful?

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