[TR] U.S. EPA Finalizes Rulemaking to Permit Year-Round Sales of E15 Gasoline

[Randall]

> I would have thought you can get +\- 5% changes just in the 
> adjustments available.

A stock TR250 lacks mixture adjustment at all; the later TR6 carbs have only
a very limited range of adjustment.  And it mostly affects idle, the effect
on open throttle is even less.

> The other consideration is what does the alcohol do the the 
> rubber parts in the fuel system. 

Agreed, but E15 isn't going to be any worse in that respect than E10; which
is already available everywhere, year round.

> Replacing all the fuel hoses is a good idea, too.

Good idea anyway, if they haven't been done in the past decade or two.  The
original type hoses are only good for 10-20 years, even without ethanol in
the fuel.

But anything sold in the US as "fuel line" in the past 20 years or so should
be ethanol-resistant.

-- Randall