Skip to Main Content
Shop by Vehicle
Open full size product 20W-40 Synthetic V-Twin Motorcycle Oil
Roll over image to zoom in
Roll over image to zoom in

AMSOIL 20W-40 100% Synthetic V-Twin Motorcycle Oil

Product code : MVIQT-EA

Developed by AMSOIL for use in Victory * and Indian* Motorcycles

  • Outstanding wet-clutch performance
  • Exceptional wear protection
  • Promotes cooler operation
  • Protects against rust and corrosion during storage

AMSOIL 20W-40 100% Synthetic V-Twin Motorcycle Oil



AMSOIL 15W-60 and 20W-40 Synthetic V-Twin Motorcycle Oil provides Indian and Victory riders the confidence and security that comes with receiving maximum protection and performance for their bikes. It presents a premium alternative to higher-priced manufacturer-branded oils.

MVIReduces Friction, Heat and Wear
AMSOIL Synthetic V-Twin Motorcycle Oil is engineered to protect critical components in high-heat conditions. It exceeds the standard for high-temperature film strength to deliver excellent wear protection (see graph) and contains a heavy treatment of anti-wear additives to reduce wear regardless of operating conditions. AMSOIL Synthetic V-Twin Motorcycle Oil is thermally (heat) stable and contains maximum levels of oxidation-inhibitor additives. It is extremely resistant to breakdown and is engineered to prevent damaging sludge and carbon deposits for superior engine cleanliness.

Provides Anti-Wear Protection for Gears and Chains
AMSOIL Synthetic V-Twin Motorcycle Oil is shear stable and resists thinning from mechanical activity. It performs like a gear lube without the negative effects of extreme-pressure additives, such as poor wet-clutch performance.

Delivers Superior Rust Protection
Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause major damage, such as uncontrolled wear, compression loss and blow-by. Good rust protection, however, comes by design and is not natural to motor oils. Unlike many motorcycle oils, AMSOIL Synthetic V-Twin Motorcycle Oil contains special anti-rust agents, providing outstanding protection against rust and corrosion.

Catalytic-Converter Compatible
AMSOIL Synthetic V-Twin Motorcycle Oil meets the requirements for emission-system protection and is designed for use in motorcycles with catalytic converters.

Provides Excellent Wet-Clutch Performance
AMSOIL Synthetic V-Twin Motorcycle Oil delivers the confidence of quiet, smooth shifting and positive clutch engagement. It controls heat and helps prevent slippage and glazing.

APPLICATIONS
Use AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil in motorcycles that require 20W-40 motorcycle oil and any of the specifications listed below, including those made by Victory* and Indian*.

  • JASO MA
  • API SM
  • ILSAC GF-4

COMPATIBILITY
AMSOIL Synthetic V-Twin Motorcycle Oil is compatible with other conventional and synthetic motor oils. Adding other oils, however, will shorten the life expectancy of AMSOIL motor oils and reduce their performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL Synthetic V-Twin Motorcycle Oil.

SERVICE LIFE
For on-road use in engines and transmissions: When paired with an AMSOIL Ea® Motorcycle Oil Filter, AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil is capable of providing premium protection for up to 2X the motorcycle manufacturer-recommended change interval or one year, whichever comes first. Change other brand oil filters at standard intervals.

For off-road use in engines and transmissions: Change AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil at the standard motorcycle manufacturer-recommended change interval.

For racing or in engines modified from the original factory design: no change interval recommendation is made; oil changes are at the owner's discretion.

WARRANTY SECURE
AMSOIL Synthetic V-Twin Motorcycle Oil is Warranty Secure, keeping your factory warranty intact. AMSOIL Synthetic V-Twin Motorcycle Oil is a high-performance replacement for vehicle manufacturer-branded products and is also backed by the AMSOIL Limited Warranty. For details, visit www.amsoil.com/warranty/.

Warranty Secure

HEALTH AND SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Safety Data Sheet (SDS). An SDS is available via the Internet at www.amsoil.com or upon request at 715-392-7101. Keep Out of Reach of Children. Recycle used oil and bottle.

*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. All products advertised here are developed by AMSOIL for use in the applications shown.

AMSOIL 20W-40 100% Synthetic V-Twin Motorcycle Oil

Data Bulletin

Warranty

SDS



AMSOIL 20W-40 100% Synthetic V-Twin Motorcycle Oil

  • 5 star rating
    bike tuneup
    By  EARL,  a  Verified Buyer  from  CO  on  May 22, 2025
    did three bike in one day with friends. Will always use your product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    bike tuneup
    By  EARL,  a  Verified Buyer  from  CO  on  May 22, 2025
    All went great. Got three done in one day with friends. Have used this stuff for years and will always use your product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    V Twin
    By  Derb,  a  Verified Buyer  from  Alberta  on  May 21, 2025
    Best oil I have used by far. I lovethe fact that I can use it in all 3 holes. I find my bike runs cooler as well.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil
    By  Darkrider,  a  Verified Buyer  from  Nashville   on  May 21, 2025
    I have only used Amsoil in my Harley since I have owned it. Great product and never had an issue with it. I will recommend to anyone.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    All products as described
    By  JOHN,  a  Verified Buyer  from  Hamilton  on  May 20, 2025
    Think I will have to try the transmission oil the next time
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Perfect kit for my Ultra Limited Low
    By  CRAIG,  a  Verified Buyer  from  North Carolina  on  May 20, 2025
    As usual, this kit is exactly what you need to keep your bike protected and on the road. Great price and fast shipping! Highly recommended!!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great oil
    By  LANCE,  a  Verified Buyer  from  tx  on  May 19, 2025
    When I bought my used harley limited, I put 2k miles on it (no oil use at all) I changed the oil and used mobile 1 synthetic, after a week of driving locally, I then drove it about 300 miles rt, when I got home I noticed a funny noise from the motor, I was under 13lbs of oil pressure. Checked the oil and, nothing on the stick. Topped it off 2+ quarts, and the oil was really dirty. Changed the oil again, using amsoil and it sounds better and 4k later, no oil use, and clean oil. I'm sold!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Product!
    By  GABRIEL,  a  Verified Buyer  from  Wyoming  on  May 19, 2025
    Used this on a 2006 Heritage Softail. Great product that I trust.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Product!
    By  GABRIEL,  a  Verified Buyer  from  Wyoming  on  May 19, 2025
    Used this on a 2006 Heritage Softail. Great product that I trust.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Harley M8 Engine oil kit
    By  JACOB,  a  Verified Buyer  from  New Mexico   on  May 19, 2025
    Great product and a great package deal. This is great oil for your Harley M8 engine.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?