Ethanol burns hotter than gasoline and corrodes soft metals, plastics and rubber. The groups collectively believe more testing is needed to determine how much ethanol is too much for different types of existing engines to use safely without risking engine failure that could leave a boat stranded at sea, a snowmobile stuck in subfreezing temperatures in a wilderness blizzard, or a motorcycle unable to move in the blazing heat of a desert.

"Some ethanol companies want consumers to pump first and ask questions later," said National Petrochemical . I google the problems w/outboards like the above

Forget sending them to college get em in the outboard motor repair school. These outboards engines are doomed