I have been reading lately that gasohol is bad for boat engines. It
deteriorates in 30 to 60 days, and I'm not sure products like Stabil can control
it. I personally have put
Stabil in my gas just after buying it, yet I have had to clean the jets on my
Yamaha
9.9T three times this season. I have two filters, one on the tank line and one
in the
engine, but they are not doing the job. Someone recommended going to 10 micron
filters. I don't know what is inside the engine but my tank filter is 40
microns. If the
gasohol truely breaks down this quickly, one would have to plan to swap out the
boat gas at frequent intervals. I'm also told the newer tank lines are made of
a material that is more resistant to the gasohol problem. Right now, I don't
have any
good solutions to this problem.

Sherwin D.