AMSOIL Motor Oils
Motorcycle & Scooter Oils
AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil for Victory & Indian motorcycles
20W-40 Synthetic V-Twin Motorcycle Oil (MVI)

High-Performance lubricant for engines and transmissions. AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil provides Indian and Victory motorcycle owners peace of mind, confidence and security. AMSOIL presents maximum protection and performance from a full synthetic oil. Premium alternative to higher-priced manufacturer-branded semi-synthetic oils.


Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)

AMSOIL Product Code: MVI

MSDS Sheet For AMSOIL MVI Product Data Sheet For AMSOIL MVI

Product Application
AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil is recommended for air- or liquid-cooled Indian, Victory and other four-stroke motorcycles calling for a 20W-40 motor oil. It meets API SM, JASO MA and API GL-1 specifications, providing outstanding protection for engines and transmissions.

Product Application Specification

• API GL-1

Product Description
A premium oil designed for those who demand the absolute best lubrication for their motorcycles. It is the result of extensive research and is specially formulated to excel in all areas unique to motorcycles, including the high temperatures of air-cooled engines, wet-clutch lubrication, extreme-pressure regions of gears and chains and rust protection. AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil is multi-functional and engineered for Victory® and model-year 2013 and newer Indian® motorcycles.

Reduces Friction, Heat and Wear
AMSOIL 20W-40 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 20W-40 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.

High temperature shear test result

Provides Anti-Wear Protection for Gears and Chains
AMSOIL 20W-40 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 20W-40 Synthetic V-Twin Motorcycle Oil contains special ant-irust agents, providing outstanding protection against rust and corrosion.

Catalytic-Converter Compatible
AMSOIL 20W-40 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 20W-40 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, while its high TBN helps improve clutch life by resisting the acids that can degrade clutch material.

AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil is compatible with other conventional and synthetic motor oils; however, mixing oils may shorten the oil's life expectancy and reduce its 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.

For on-road use in engines and transmissions:
AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil and AMSOIL Ea® Motorcycle Oil Filters are 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 modified engines:
No change interval recommendation is made; oil changes are at the owner's discretion.

This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL MVI.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.


AMSOIL 20W-40 Synthetic V-Twin Motorcycle Oil (MVI)

Kinematic Viscosity @ 100°C, cSt (ASTM D445) 14.0
Kinematic Viscosity @ 40°C, cSt (ASTM D445) 105
Viscosity Index (ASTM D2270) 135
Flash Point °C (°F) (ASTM D92) 232 (450)
Fire Point °C (°F) (ASTM D92) 258 (496)
Pour Point °C (°F) (ASTM D97) -41 (-42)
High Temperature/High Shear Viscosity (ASTM D5481 @ 150°C , 1.0 x 106 s-1), cP 4.2
Four Ball Wear Test (ASTM D4172 @ 40 kgf, 150°C, 1800 rpm, 1 hour), Scar, mm 0.41
Noack Volatility, % weight loss (g/100g) (ASTM D5800) 2.7
Foam (ASTM D892, Sequence I, II & III) 0/10/0
Total Base Number 11.6

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