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All Yamalube Four Stroke Marine Oils for Outboard Motors are NMMA® FC-W®Certified. What does this mean? Well, the National Marine Manufacturers Association® (NMMA®) has worked with industry leaders to establish testing criteria and performance standards for four stroke marine oil. Before an oil can achieve NMMA® FC-W® certification, it must pass a 100-hour general performance engine test as well as bench tests for viscosity, filter plugging, foaming and aeration. To gauge rust and corrosion resistance, the NMMA® FC-W® oil committee has developed the industry’s most punishing test. This proprietary test simulates a brutal marine environment, subjecting actual steel cylinder sleeves to extreme moisture and salt. Automotive oils simply aren’t formulated to withstand these harsh conditions, so they won’t come close to meeting the demanding NMMA® FC-W® standards.
Examine an outboard/marine engine’s performance demands Measure those demands against NMMA®standards Formulate the oil to meet or exceed all requirements
Game-Changing Technology Demands Advanced Lubrication. All of Yamalube’s four stroke marine formulations are NMMA® FC-W®certified. They provide high-performance lubrication that stands up to extended full-throttle operation, high loads and the salt air of a brutal marine environment.
In stark contrast, many competing oil manufacturers simply take existing formulations and modify them just enough to achieve certification. Unfortunately, this doesn’t ensure that the performance needs of the engine are also met. For overall protection and maximum performance, choose NMMA® FC-W®-certified Yamalube marine oils.
Others simply follow industry standards. We prefer to stay ahead of them.
Outboard Oil
To make sure you’re purchasing an NMMA® FC-W® certified oil, look for this symbol on its bottle.
Why are NMMA® FC-W®-Certified Oils Better? Oils that earn FC-W® certification have been proven to provide the performance and quality demanded by today’s advanced four stroke outboard technology. These oils stand up to extended full-throttle operation, high loads and the salt and moisture-rich air found in a harsh marine environment.
Why Should Yamalube Be Your Marine Oil of Choice? In formulating each Yamalube marine oil, Yamaha oil engineers follow this three-step process:
YAMALUBE 5W-30 4M
Yamalube 4M Full Synthetic Four Stroke for Outboards
5w-30-outboard-full-synthetic-4m-fc-w
*Dealer order pack quantities shown - available individually from your dealer.
1 Quart Bottles (Qty. 12*) LUB-05W30-FC-12 1 Gallon Bottles (Qty. 4*) LUB-05W30-FC-04
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For VMAX SHO® High-Performance Four Strokes
Formulated especially for outboard motors. Not recommended for WaveRunner® personal watercraft or Sport Boats.
Full Synthetic High-Performance Lubrication Precision Blended
NMMA® FC-W® Certified
NMMA® FC-W® Certified Yamalube 4M FS has been thoroughly reviewed by the NMMA®. It’s passed rigorous tests for performance, viscosity, corrosion, filter plugging, foaming and aeration and has been proven to provide the performance and quality today’s advanced four stroke technology requires.
NMMA® FC-W® 5W-30 4M Oil
Outboard Oil
Rust Corrosion Protection Specific marine additives combat rust, corrosion, varnish, and wear; all while providing high levels of bearing protection, resistance to foaming and lubrication.
Yamalube 4M FS Our first full synthetic marine oil, Yamalube 4M FS pushes outboard lubrication and performance to new levels. It features all the benefits of the original, mineral-oil-based Yamalube 4M but with a full synthetic formula that dials up lubricity, lowers friction levels and improves fuel economy. Offered in a 5W-30 weight, it provides excellent lubrication in all climates. It’s recommended primarily for the Four Stroke V MAX SHO® but works well in our other four strokes (e.g. V6 Offshore and F70 models) and in other brands of marine stern drive and inboard engines.
Yamalube 4M Full Synthetic Four Stroke for Outboards NMMA® FC-W®-certified, Yamalube 4M Full Synthetic is our highest performance, four stroke outboard formula. It increases lubricity for lower friction levels and can improve fuel economy.
YAMALUBE 5W-30 4M