[THEFERMANATOR]

Originally Posted by cterrebonne

same here, daily or weekly used stuff gets e10, other stuff gets e0.

I know it might not make a difference, but I would like to see the air to fuel ratio of an outboard without an 02 sensor running ethanol and non-ethanol fuel. I imagine the ethanol fueled engine would run leaner.

A 10% blend isn't supposed to lean out the engine to much as the lower viscosity of it allows it to compensate some there. And if you do the math you only need about 4-5% more E-10 than regular pure gas to achieve the same power output. And with ethanols cooling effect it isn't a problem either. 15% and up is where you start playing on thin ice and worry.