AMSOIL 15W-50 Metric Synthetic Motorcycle OilAn ultra-premium, 100% synthetic motorcycle oil. For motorcycles requiring a 15W-50 oil for engine or transmission. Protect your investment, while maximizing engine and shifting performance.

Package Sizes:

  • Single US Quart Bottle
  • Case of 12 US Quart Bottles

We can offer AMSOIL 15W-50 Metric Synthetic Motorcycle Oil at the lowest prices in Canada or the US. Request a wholesale price list using the contact form on this page.

Suitable Applications

For any motorcycle engine or transmission requiring a 15W-50 oil including models from the following motorcycle makers.

  • BMW
  • Ducati
  • KTM
  • Yamaha
  • Triumph
  • Royal Enfield

An ideal replacement and upgrade for the following 15W-50 motorcycle oils.

  • BMW Advantec Pro or Advantec Ultimate 15W-50
  • Shell Advance Ducati 15W-50
  • Yamalube Full-Synthetic 15W-50 4-Stroke Oil
  • Arctic Cat ACX Extreme Temp Formula 15W-50
  • Maxima Extra4 15W-50 Synthetic Oil
  • Motorex Top Speed 4T 15W-50 Motorcycle Oil
  • Motul 5100 Ester 4T Technosynthetic Oil
  • Ipone Full Power Katana 15W-50

AMSOIL 15W-50 Metric Synthetic Motorcycle Oil Covers The Following Industry Specifications

  • API SM

Not for use where an API GL-4 or GL-5 gear lube is required.

Features And Benefits Of AMSOIL Metric Synthetic 15W-50 Motorcycle Oil

  • Friction-reducing synthetic formula
  • Delivers outstanding wear prevention
  • Eases gear selection
  • Provides superior clutch performance and longevity
  • Resists break-down and shearing during extreme operating conditions
  • Formulated for ultra-long service life
  • Safe for catalytic converters
  • Contains rust/corrosion inhibitors for off-season protection
  • Promotes clean engine and transmission internals
  • Prevents foaming during high RPM operation
  • Fights oil consumption
  • Priced competitively

World-Class Wear Protection

AMSOIL 15W-50 Metric Synthetic Motorcycle Oil is formulated with a 100% synthetic base oil and the industry’s most powerful additive chemistry. Metric 15W-50 is highly resistant to heavy loads, high RPM and extreme heat. The shear-stable formula allows this product to maintain its original viscosity over long intervals and hard service. This synthetic 15W-50 will preserve your engine season after season.

Smooth, Low-Friction Performance

The synthetic make-up of AMSOIL 15W-50 Metric allows for smoother engine operation and improved gear shifting. From idle through red line, AMSOIL 15W-50 Metric Synthetic Motorcycle Oil enhances performance and the smile on your face.

Controls Heat

The low-friction formula of AMSOIL 15W-50 Metric Synthetic Motorcycle Oil lowers engine and gearbox temperatures. This reduces stress on engine components while maintaining consistent, fade-free performance.

Preserves Clutches

AMSOIL Metric 15W-50 is formulated to provide consistent clutch engagement. Expect steady clutch performance across the temperature spectrum and through the entire service interval. The heat-fighting abilities and precise frictional properties of Metric 15W-50 can extend clutch life.

Off Season Corrosion Protection

Protection of your pride and joy should also be a consideration during the off-season. AMSOIL Metric 15W-50 contains a robust anti-rust/corrosion package that protects engine internals during extended storage periods.

Mixing AMSOIL 15W-50 Metric Synthetic Motorcycle Oil With Other Brands

AMSOIL Motorcycle Oil is compatible with all other brands of conventional, semi-synthetic and synthetic motorcycle oils. While you can safely mix AMSOIL Synthetic Oil with other brands, this will reduce the drain interval and performance capabilities of AMSOIL motorcycle oil.

The use of any aftermarket oil additives is definitely NOT recommended.

Service Life Of AMSOIL 15W-50 Metric Synthetic Motorcycle Oil

Capable of a service life of up to twice the oil change interval suggested by your owner’s manual or one full year (whichever comes first) in motorcycle engines and transmissions. When using any engine oil filter other than an AMSOIL Ea Motorcycle Oil Filter, change the oil filter at the manufacturer’s recommended service interval. AMSOIL Ea Motorcycle Oil Filters are designed with the capability of staying in service for the duration of the maximum drain interval of this product.

Off-road service: Change AMSOIL 15W-50 Metric Synthetic Motorcycle Oil at the motorcycle manufacturers’ suggested service interval.
Racing service or modified engines: Extended service intervals are not recommended.

When mixing other motorcycle oil brands with AMSOIL, revert to the manufacturer’s recommended service interval.


AMSOIL Synthetic 15W-50 Metric Motorcycle Oil (MFF)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445)20.2
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)140.7
Viscosity Index (ASTM D-2270)165
Noack Volatility, % weight loss (g/100g) (ASTM D-5800)3.8
Pour Point °C (°F) (ASTM D-97)-39 (-38)
Flash Point °C (°F) (ASTM D-92)238 (460)
Fire Point °C (°F) (ASTM D-92)274 (525)
High Temperature/High Shear Viscosity @ 150°C , 1.0 x 106 s-1), cP (ASTM D5481)5.7
Four Ball Wear Test (ASTM D4172 @ 40 kgf, 150°C, 1800 rpm, 1 hour), Scar, mm0.34
Total Base Number11.6
AMSOIL 15W-50 Metric Synthetic Motorcycle Oil
An elite full-synthetic motorcycle oil for any motorcycle engine or transmission requiring a 15W-60.
Manufacturer: AMSOIL
Model: Metric 15W-50 Synthetic Motorcycle Oil
Product ID: MFF