FC-W Outboard Oils represent a series of semi-synthetic lubricating oils, available in 10W/30, 10W/40, and 25W/40 grades. These oils have been meticulously developed to address the evolving demands and increased performance requirements of modern four-stroke outboard engines.

These FC-W Outboard Oils not only meet but exceed the performance standards set by the NMMA (National Marine Manufacturers Association) through their FC-W Catalyst Compatible® oil standard, ensuring top-notch quality and compatibility with advanced catalyst systems.

By delivering exceptional wear and corrosion protection, as well as effectively reducing deposits and oil consumption, FC-W Outboard Oils uphold peak engine performance and reliability. This, in turn, extends the engine’s lifespan, making it a trusted choice for the demanding requirements of four-stroke outboard engines.


The combination of premium grade synthetic and mineral base oils with specially designed marine grade additives has produced Four Stroke Outboard Motor Oils which meet the FC-W Catalyst Compatible® requirements.

Outboard manufacturers require improved lubricant performance in the area of:

  • Rust protection
  • Ring sticking
  • Ring wear
  • Lubricity
  • Detergency

FC-W Outboard Oils satisfy all of the above improved performance requirements. In addition they use an additive system designed to reduce the tendency of older oils to form gels or to become hazy during storage or at low temperatures.


FC-W Outboard Oils are the prime recommendation for four stroke outboard engines such as Johnson, Evinrude, Mercury, Chrysler, Suzuki, Yamaha and Tohatsu.


NMMA FC-W Catalyst Compatible® API SM

Always consult your vehicle owner’s manual for the manufacturer’s lubricant recommendations.


Property                                                  ASTM Method                       FC-W Outboard Oils

API Grade Item Code (VI8-) Appearance    Visual10W-30 2137A Amber10W40 2138A Amber25W-40 2136A Amber
Density (kg/Lt) @ 15oCD-12980.86690.8720.8777
Viscosity (cSt) @ 100oCD-44510.914.415.0
@ 40oCD-44567.899.0142.1
Viscosity IndexD-2270152150106
Sulphated Ash (% wt)D-8740.810.810.81
Flash Point, PMCC (oC)D-93214214243
Pour Point (oC)D-97-24-21-21
Total Base Number (mg KOH/g)D-28967.387.387.38
Nitrogen (% wt)D-52910.0750.0750.075

Available in:         Bulk, 200 Litres, 20 Litres, 5 Litres and 1 Litre

Item code:             VI8-2136A (25W-40)

Product Informations

Product Data Sheet

Material Safety Data Sheet