Ted Rydstrom

AMSOIL 10W-40 Synthetic Marine Engine Oil

I use my boat year round fishing the Columbia and Snake rivers. There is only one oil that I will trust on my Yamaha outboard. That is Amsoil Marine 10-40! Fights Engine Wear AMSOIL Synthetic Marine Engine Oil’s naturally strong base oils resist viscosity loss due to mechanical shear. It develops a tough lubricating film

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