Originally Posted by 52Carl
Why are you running 98 octane?

Originally Posted by bajintas
To try to stop the pinging.
I’m in Australia. We have 91 or 98


Australia, and most of the rest of the world use the Research Octane Number (RON) only. In the USA, we rate gas with an average of RON and MON (Motor Octane Number).

The RON ratings in Australia translate to about 4-6 higher than the API numbers in America.

Therefore, 98 octane fuel in Australia is equivalent to ~93 octane in the USA. 91 in Australia is 87 here.

1950 Chevrolet 3100 (Ol' Roy)

1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)