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Originally Posted by Baron Von Zeppelin

Do they rate octane there , the same way we do in the USA ?
Today's 93 is equal to old days 100
Not sure what 98 new method would equal to by the old method.

NZ does use a different rating method than the US so 98 here would be 93-94 there (roughly);

From www.protune.co.nz;

In most countries (including all of Europe, Australia and New Zealand) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "regular" gasoline in the US and Canada, would be 91-95 (regular) in New Zealand.