Yes I guess we are lucky down under. Standard unleaded is 91 octane and some brands best is 95 but a number also stock 98 which I use when I can get it. A little more expensive but I think I get better mileage. You can also get E10 fuel which is 10% ethanol which you don't go near ever!
The US uses a different RON rating. Their 87 is the equivalent of Aus/NZ 91, and their 91 is the same as our 95. They still don't appear to have a 98 equivalent though.
Last edited by Tbird K1W1; 09-04-2011 at 08:56 AM.