YAMAHA - LUB-20W40-FC-12 - 4M FC-W SYNTHETIC BLEND, 4-STROKE MOTOR OIL - 1 Quart
In order for an oil to be approved by the NMMA to hold its highest rating for marine engine oils, FC-W (Four Cycle – Water cooled) it must pass a multitude of tests. Automotive oils don’t pass these tests, which is why it’s important to use NMMA-Certified Yamalube 4M FC-W. Automotive oils do not usually run at 6000 rpm. Yamaha Outboard engines were designed to run at full throttle (5500 to 6000 rpm) all day long. At these speeds it's critical that engine oil doesn't foam. Foaming reduces lubricity which can lead to accelerated wear and premature failure. Yamalube 4M FC-W has the best blend of anti-foam technology available.
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