Older boats and motors need to change out all the fuel hoses with a hose that has an A-1 rating printed on them.
If you don't, sooner or later they will be eaten up and you will have problems.
It's best you do it now, cause one of these days, everyone will be selling E-10 or higher gas.
The stuff will clean out the gun in the tank and run that into the filters too, so bring extra filters with you.
If you have newer motors, it may not be as bad, but I know that Honda's have had issues with E-10. They lose some HP with ethanol based gas.
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