ORIGINAL: khodges
ORIGINAL: Pat Roy
Generally, anything greater than pump premium is a waste of money.
Agreed. All octane does is raise the flashpoint of gasoline.
Not so. The flash point (Pensky Martin Closed Cup) depends on volatility of the different fractions in the gas. This is not equivalent with octane rating in the fuel, which mostly depends on burn speed.
Not very many of our model airplane engines need more than 87 octane. .
All European engines need premium gas of 91 PON (pump octane) (MVVS, Evilution, ZDZ, 3W etc)