AMSOIL 15W-60 100% Synthetic V-Twin Motorcycle Oil

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AMSOIL 15W-60 100% Synthetic V-Twin Motorcycle Oil

AMSOIL 15W-60 100% Synthetic V-Twin Motorcycle Oil (MSV) is the popular extra-wide-range SAE 15W-60 synthetic developed for use in Victory and Indian motorcycles, and for other high-output V-twin builds that call for a 15W-60 motorcycle grade in the engine and transmission. The formulation combines a 15W cold rating with a 60-weight hot rating, so the oil flows on cool morning starts and holds film strength under sustained hot operation in big-bore, performance, air-cooled V-twins.

Heat resistance for air-cooled performance V-twins

Air-cooled V-twins build heat quickly in parade traffic, in summer touring, and in stage-tuned builds that put more cylinder pressure on the top end than stock. AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil is engineered to protect critical components in high-heat conditions, with a heavy treatment of anti-wear additives that limit metal-to-metal contact as oil temperatures climb. The formulation is thermally stable at high temperatures and contains maximum levels of oxidation inhibitors, so it resists breakdown and helps prevent damaging sludge and carbon deposits that compromise engine cleanliness over long stretches of hot operation.

Shear stability and protection for gears and chains

The 15W-60 formulation is shear stable and resists thinning from the mechanical activity inside a motorcycle gearbox, where the same oil lubricates loaded gear teeth and the surfaces that drive the clutch. AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil performs like a gear lube without the negative effects of extreme-pressure additives, such as poor wet-clutch performance. The High-Temperature/High-Shear Viscosity Test (ASTM D5481) measures viscosity under severe high-temperature shear similar to severe operating conditions experienced by motorcycles, and higher values indicate improved wear protection. The 15W-60 grade tests at 6.9 cP on ASTM D5481, supporting the thicker hot-shear film that high-output V-twin riders look for in a 60-weight motorcycle oil.

Wet-clutch performance and JASO MA

Wet clutches require a JASO-rated motorcycle oil rather than a passenger-car formulation built with modern friction modifiers, which can lead to slippage and glazing. AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil meets JASO MA and delivers the confidence of quiet, smooth shifting and positive clutch engagement. It controls heat across the engagement zone and helps prevent slippage and glazing. The formula carries a total base number of 11.6, which helps neutralize the combustion acids that degrade clutch friction material over the service interval.

Rust protection for stored and short-trip motorcycles

Motorcycles are prone to rust from storage, humidity, and short rides, and standing moisture inside an engine drives uncontrolled wear, compression loss, and blow-by. Good rust protection comes by design and is not natural to motor oils. Unlike many motorcycle oils, AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil contains special anti-rust agents that deliver outstanding protection against rust and corrosion through seasonal storage and short-distance riding cycles.

Catalytic-converter compatible across the V-twin range

Modern Indian Chief and Roadmaster touring bikes, Victory cruisers, and other emissions-controlled V-twins run a catalytic converter in the exhaust. AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil meets the requirements for emission-system protection and is designed for use in motorcycles with catalytic converters, which makes it appropriate for late-model bikes that share the 15W-60 viscosity recommendation. The oil also meets API SM and ILSAC GF-4 service categories, covering the broader set of engine-protection requirements a 15W-60 motorcycle oil is asked to satisfy.

Recommended applications and service intervals

Use AMSOIL 15W-60 Synthetic V-Twin Motorcycle Oil in motorcycles that require a 15W-60 motorcycle oil and any of the specifications listed below, including bikes made by Victory and Indian. Specifications met include JASO MA, API SM, and ILSAC GF-4. For fit by bike, use the AMSOIL vehicle lookup guide.

• On-road engines and transmissions, paired with an AMSOIL Ea Motorcycle Oil Filter: up to 2X the motorcycle manufacturer-recommended change interval or one year, whichever comes first.
• On-road engines and transmissions with a non-AMSOIL filter: change the filter at the standard interval.
• Off-road engines and transmissions: change at the standard motorcycle-manufacturer-recommended interval.
• Racing or engines modified from the original factory design: no change-interval recommendation is made, and oil changes are at the owner's discretion.

The oil is compatible with other synthetic and conventional motor oils, but mixing shortens its service life and reduces performance benefits, so extended drain intervals are not supported on mixed oil. Aftermarket oil additives are not recommended for use with AMSOIL Synthetic V-Twin Motorcycle Oil. For viscosity, JASO, and wet-clutch guidance across the broader V-twin and metric motorcycle range, review the AMSOIL motorcycle oil guide.

Typical technical properties

Order AMSOIL 15W-60 100% Synthetic V-Twin Motorcycle Oil

AMSOIL 15W-60 100% Synthetic V-Twin Motorcycle Oil ships in the quart bottle (MSVQT-EA) and the case of 12 quarts (MSVQT-CA). The product is Warranty Secure and is backed by the AMSOIL Limited Warranty when used as directed. For application match by motorcycle, viscosity, JASO, and wet-clutch guidance across the V-twin range, review the AMSOIL vehicle lookup guide and the AMSOIL motorcycle oil guide before placing an order. Order Now.

Frequently asked questions