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.

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
Senior Vice President, Engineering Standards

2020 FC-W® Registered Four-Stroke-Cycle Marine Oils

Number Name Company
FB-00511J Yamalube Marine Performance 4M Four Stroke FC-W 10W-30 Yamaha Motor Corporation
FB-00512J Yamalube Marine Performance 4M Four Stroke FC-W 20W-40 Yamaha Motor Corporation
FB-00616J Lubrax Nautica Tecno SAE 25W-40/Petrobras Distribuidora Petrobas Distribuidora S.A.
FB-00620K Yamalube 5W30 Full Syn Marine FCW Yamaha Motor Corporation
FB-13103U INA Outboard 4T SAE 10W-30 INA MAZIVA, Ltd
FB-13721U 4 TEMPS FCW 10W-30 Minerva Oil SAS
FB-13724U ECSTAR V7000 Semi-Synthetic Marine Engine Oil Suzuki Motor Corporation
FB-13811W Marine Outboard Four Stroke Oil 10w-40 Penrite Oil Company Pty Ltd
FB-14307W Marine Performance 20W-40 Yamaha Motor Canada Ltd.
FB-250198Y LIQUI MOLY 4T Motor Oil 25W-50 Liqui Moly GmbH
FB-31001B Tohatsu Premium Four-Stroke Oil Tohatsu America Corp.
FB-37565U KPO Jetski Watercraft 10w-40 Kawasaki Motors Corp., U.S.A.
FB-40003A Ravenol Outboardoel 4T Ravensberger Schmierstoffvertrieb GmbH
FB-42111T Liqui Moly Marine 4T Motor Oil SAE 10W-30 Liqui Moly GmbH
FB-42112T Liqui Moly Marine 4T Motor Oil SAE 25W-40 Liqui Moly GmbH
FB-43069W Marine Full Synthetic 5W-30 Yamaha Motor Canada Ltd.
FB-43072W Marine Performance 10W-30 Yamaha Motor Canada Ltd.
FB-44228J Honda Marine 10W-30 Engine Oil Idemitsu Lubricants America Corporation
FB-44303J Gulf Pride 4004, SAE 10w40 Gulf Oil International
FB-80460T Yamalube Marine Performance FC-W 10W-30 Yamaha Motor Distribution Latin America Inc.
FB-80814K Nautic 4T SAE 10W-30 Comercial Roshfrans, S.A. de C.V.
FB-80815K Nautic 4T SAE 25W-40 Comercial Roshfrans, S.A. de C.V.
FB-83138K RAVENOL OUTBOARDOEL 4T SAE 15W-40 Ravensberger Schmierstoffvertrieb GmbH