Fuel in the US.............

[SKOOSH1970]

Wow, really surprised you guys don't add octane booster if all you can buy is 91 RON fuel..... I used to run high powered Subaru impreza's years ago..... even added octane booster to 98 Ron fuel then to avoid detonation which still used to spike occasionally on the knocklink..............!!!

Just goes to show how misguided drivers are generally around the world I guess...( by car manufacturers )

[Ian c]

Indeed they are misguided .
Misguided into thinking the Ron system in America is the same as it is in the uk .......

[mump]

Originally Posted by SKOOSH1970

Wow, really surprised you guys don't add octane booster if all you can buy is 91 RON fuel..... I used to run high powered Subaru impreza's years ago..... even added octane booster to 98 Ron fuel then to avoid detonation which still used to spike occasionally on the knocklink..............!!!

Just goes to show how misguided drivers are generally around the world I guess...( by car manufacturers )

Remember, when we in the US are saying 93 octane, it is 93 AKI = 98 RON. 91 = 95 RON.