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Originally Posted by blue2000s
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I noticed "toluene" on the list as an anti knock additive. Never had a knock but that's just because the timing will be automatically retarded, but that will effect performance. I use Toluene in a pinch to up the octane, It has debatable burn characteristics but it is cooler.
That's strange the higher oct. gives worse mileage. Here in CA we get to set the standards for some 12 other states(sorry) (instead of looser fed standards). I thought we oxygenated with alcohol everything, 87-91 oct. No escape. It use to be just a summertime thing but I think it's year around now.
Is performance wonder how much performance is effected with 91 oct.
Regards, PK