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... hunting crickets ???
BTW, Shell V-power is not "euro98".
And indeed, V-power is different in most of the countries.
Euro95 and Euro98 are very precisely described on what they should be.
RON is a theoretical value, MON is coming much closer to the true knock resistance.
EU95 has RON of 95 minimum to 97.9max, and a MON of minimum 85
EU98 has RON of 98 minimum , but a (MON+RON)/2 value of at least 93
What does that mean : you can't just add some stuff to EU95 to turn it into EU98, but you can turn it into V-power. When you get the knocking, that's when you loose a few%'s of power due to the automatic 'less-pre-advancing' of the ignition. The anti-knock pichs up that sound and starts (should start) protecting the engine.
Not sure what happens however when you start chipping the engine's ECU?
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