AMSOIL 15W-50 Metric Fully Synthetic Engine Oil

AMSOIL 15W-50 Metric is a fully synthetic engine oil engineered for four-stroke metric motorcycles where the oil lubricates both the engine and transmission. It’s formulated to reduce friction, heat and wear, provide smooth shifting and strong clutch feel, maintain viscosity under high-temperature operation, and help keep critical components clean—ideal for sport bikes, cruisers, touring and adventure motorcycles.

Key Benefits

• Reduces friction, heat and wear for strong protection

• Wet-clutch compatible (no friction modifiers) for smooth shifting and positive clutch engagement

• Helps control foam for reliable protection at high rpm

• Helps resist sludge and carbon deposits for superior cleanliness

• Added rust and corrosion protection during storage/inactivity

Applications (Specifications / Approvals)

Use in motorcycles that require 15W-50 motorcycle oil.

• API SN

• JASO MA/MA2
  Not recommended for applications requiring an API GL-4 or GL-5 gear oil.

Change / Drain Interval (Service Life)

• Use with an AMSOIL oil filter for up to twice the motorcycle manufacturer-recommended change interval (miles/hours) or 1 year, whichever comes first.

• When using any other oil filter, change the oil and filter at the recommended intervals.

• Extended drain intervals are not recommended in racing or modified engines; oil changes are at the owner’s discretion.

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