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You have to differ between ROZ, MOZ, RON, MON and AON octane. ROZ and MOZ are the DIN names so abbreviations for german words. ROZ equals RON and MOZ equals MON in english.
RON = Research octane Number
MON = Motor octane Number
What you get in the US is AON (average octane number) or AKI (anti knock index) which is both the same. Its the average of RON and MON. MON is lower than RON and thats why your numbers a lower than ours. Our fuel is sold by ROZ(RON) numbers. What really counts for reduction of detonation is MOZ(MON) but nobody seems to bother.

For example:
Our 98 and 100 ROZ Octane premium fuel has 88 MOZ

98+88 decided by 2 is 93. So this fuel is equivalent to 93 AON.
100 ROZ + 88 MOZ decided by 2 would result in 94 AON.

But whats significantly different is the quality of the fuel. Also the quality is consistent as it comes from one big refinery for the most parts of Austria and surrounding countries. You rarely see dirt in fuel system related issues here.

Bernhard

<blockquote data-quote="darock" data-source="post: 1838934" data-attributes="member: 30367">You have to differ between ROZ, MOZ, RON, MON and AON octane. ROZ and MOZ are the DIN names so abbreviations for german words. ROZ equals RON and MOZ equals MON in english. RON = Research octane NumberMON = Motor octane NumberWhat you get in the US is AON (average octane number) or AKI (anti knock index) which is both the same. Its the average of RON and MON. MON is lower than RON and thats why your numbers a lower than ours. Our fuel is sold by ROZ(RON) numbers. What really counts for reduction of detonation is MOZ(MON) but nobody seems to bother. For example:Our 98 and 100 ROZ Octane premium fuel has 88 MOZ98+88 decided by 2 is 93. So this fuel is equivalent to 93 AON. 100 ROZ + 88 MOZ decided by 2 would result in 94 AON. But whats significantly different is the quality of the fuel. Also the quality is consistent as it comes from one big refinery for the most parts of Austria and surrounding countries. You rarely see dirt in fuel system related issues here. Bernhard</blockquote>

[QUOTE="darock, post: 1838934, member: 30367"] You have to differ between ROZ, MOZ, RON, MON and AON octane. ROZ and MOZ are the DIN names so abbreviations for german words. ROZ equals RON and MOZ equals MON in english. RON = Research octane Number MON = Motor octane Number What you get in the US is AON (average octane number) or AKI (anti knock index) which is both the same. Its the average of RON and MON. MON is lower than RON and thats why your numbers a lower than ours. Our fuel is sold by ROZ(RON) numbers. What really counts for reduction of detonation is MOZ(MON) but nobody seems to bother. For example: Our 98 and 100 ROZ Octane premium fuel has 88 MOZ 98+88 decided by 2 is 93. So this fuel is equivalent to 93 AON. 100 ROZ + 88 MOZ decided by 2 would result in 94 AON. But whats significantly different is the quality of the fuel. Also the quality is consistent as it comes from one big refinery for the most parts of Austria and surrounding countries. You rarely see dirt in fuel system related issues here. Bernhard [/QUOTE]

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