Not Ranked
In Hawaii we have 92 octane with up to 10% ethanol (who knows?) and for
my 351W I found adding 1 gallon of 110LL Avgas per 10 of the 92 it runs a
lot better - especially in 5th and I have a 3.27 rear with the.64 5th and can
run it in 5th at 55 if it is flat and level. Before, the lowest was 65 and going
over the hill on H-3 required a downshift into 4th - no more, it just cruises
right on up. I can get the Avgas for less than $6/gallon and the mileage
goes up 2 to 3 mpg so it is well worth it.
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