Quote:
Originally Posted by DEpointfive0
The US doesn't use Octane, we use AKI, average knock index. You cannot compare it to the rest of the world
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We do refer to octane, but it's rated a bit differently -- RON+MON/2 = AKI, whereas most of the rest of the world uses RON.
You can get a close approximation on RON vs AKI tho'; typically .95*RON = approximately equivalent AKI.
Example: The Z recommended octane is 91 AKI and 96 RON
96 RON*.95 = 91.2, very close to the AKI value.