AMSOIL 20W-50 V-Twin Fully Synthetic Engine Oil

AMSOIL 20W-50 V-Twin is a fully synthetic, high-performance lubricant engineered for V-twin engines, motorcycle transmissions and primary chaincases. It’s formulated to resist extreme heat, reduce wear and deposits, and maintain viscosity for strong protection in the high-temperature conditions common to air-cooled engines. It contains no friction modifiers for excellent wet-clutch performance and offers the convenience of one lubricant for all three sumps.

Key Benefits

• Resists extreme heat to help keep engines clean and running efficiently

• Retains viscosity for excellent wear protection

• Helps protect transmissions and primaries with a shear-stable formulation

• Reduces wear and deposits for maximum compression and power

• Delivers excellent wet-clutch performance (no friction modifiers) to promote smooth shifting and positive clutch engagement

• Helps resist rust common to short trips and storage

Applications (Specifications / Approvals)

Use in motorcycles that require 20W-50 motorcycle oil and any of the following specifications (including those made by Harley-Davidson and Buell):

• JASO MA/MA-2

• API SL, SH, SG, CG-4, CF

• ISO-L-EMA2
  Also suitable for use in motorcycles that require an API CH-4 oil.
  Do not use where an API GL-4 or GL-5 gear oil is required.

Change / Drain Interval (Service Life)

• Use for up to twice the motorcycle manufacturer change interval (miles/hours) or one year, whichever comes first, in engines, transmissions and primary chaincases.

• For Big Twin Harley-Davidson transmissions only: follow the Harley-Davidson recommended drain interval for synthetic oil of up to 20,000 miles (32,187 km) or one year, whichever comes first.

• If not using an AMSOIL Motorcycle Oil Filter, change the filter at standard intervals.

• For off-road use: change at motorcycle-manufacturer-recommended intervals.

• Racing or modified engines are excluded from extended drain interval recommendations; oil changes are at the owner’s discretion.

Note: Always confirm the required viscosity and specifications in your owner’s manual before use.