Well... its been a long time since I've re-visited this.
Since the initial test... with 110 race gas... and no softening of adhesives or deterioration... fully submerged.... I've tried C12 race, AV Gas, 50% ethanol in 91 pump gas, 91 pump with octane booster, straight 91 pump (non ethanol) and now... for 10 days, 100% straight toluene... still no degradation of the filters... both stock and the SPI units.
Since the initial test... with 110 race gas... and no softening of adhesives or deterioration... fully submerged.... I've tried C12 race, AV Gas, 50% ethanol in 91 pump gas, 91 pump with octane booster, straight 91 pump (non ethanol) and now... for 10 days, 100% straight toluene... still no degradation of the filters... both stock and the SPI units.
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