With the widespread introduction of the four-stroke outboard engine technology, NMMA considered it necessary to develop a marine engine oil category specifically for marine four-stroke engines. With all of the major outboard engine manufacturers producing four-stroke outboards to further reduce emissions and increase fuel economy, the need for oil specifically designed for the unique marine environment became necessary.
FC-W Product Approval System [PDF - 210.36Kb]- FC-W and FC-W (CAT) Combined Certification Procedure Manual [PDF - 537.71Kb]
- 2018 FC-W Registered Four-Stroke-Cycle Marine Oils [PDF - 84.41Kb]
- FC-W Product Approval System [PDF - 235.38Kb]
FC-W Four-Stroke Oil Certification Program
Working with the NMMA, industry leaders in lubrication technology developed testing criteria for this marine four-stroke oil. These criteria include bench tests for viscosity, corrosion, filter plugging, foaming and aeration. In addition, the oil must successfully pass a 100-hour general performance engine test. Once an oil has been tested by a sanctioned test laboratory, NMMA will issue a license for the oil’s formulation and registers approved brands. FC-W® lubricants have demonstrated the necessary performance and quality needed in today’s high performance four-stroke marine engines. The next time you are purchasing four-stroke oil for your marine engine, look for the FC-W® trademark.
For more information regarding oil certification, contact: Tom Marhevko 2019 FC-W® Registered Four-Stroke-Cycle Marine Oils List
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