Ethanol

RioGrandMan said

thanks across the board, and fair difference in fuel types. Im curious to know the answer to both but I only have E-10 at 85 (87 some places) or 90 octane where I am at (Western CO)

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If I understand correctly you just are concerned that your older car will have issues with available gas.

Yes there can be issues

Rebuild the carb.

Replace the fuel pump

The filter

and the rubber parts in the fuel system.

Then drive and be happy.

Now you might have drivability issues due to the alcohol boiling in the system our old cars are setup with.

You can jump through hoops to eliminate the boiling or just use alcohol free gas available at maverick and buckeyes.


Check Pure-gas.org - ethanol-free gasoline in the U.S. and Canada

for other stations near you.

I have done nothing else to my 67 dart except use alcohol free gas and have no drivability issues anymore.