AT this stage in the game you might also consider getting a spare carburetor for the generator and having its jet drilled out oversize to that which would facilitate the use of alcohol (someone may actually make these too, I’ll noodle that).
The Silverado I have I originally got as a flex fuel (E85) vehicle as the whole package was cheap, and I knew that in a TEOTWAWKI situation I could make 1000 gallons of motive fuel with 150 gallons of gasoline. E85 is currently so much cheaper than gasoline (but rising) that I’ve been running it almost exclusively for about a month and a half now.
Also, our E85 pump here states that the ethanol content can vary from 51-83%. It is also 100 octane. If you run any quantity of alcohol in gasoline for engines you definitely want high turnover and/or do not let it set for long periods. Alcohol is very hydrophilic and will absorb moisture from the air over time.
Mark
I can recall several years back seeing conversion kits for generators to convert to E85.
Hence: Sealed fuel systems, as in modern cars.
(easy fix)