In Ontario?
The Gas with the least amount of sulphur is Sunoco. All average <~200 ppm. That makes it the best for me... Their Ultra 94 has less than 150 ppm!!!
By 2005, all stations should be less than 30 ppm in Canada, IIRC.
The worst is Esso, or Exxon in the US.
High sulphur content in gas doesn't allow our cats and other emission systems to run optimally.
Since I switched to just Sunoco gas, I haven't experienced any "rotten egg" odour....
Sulphur in GAS faq:
www.foecanada.org/cleanair/sulphur_faq.htm Some ratings of Sulphur content in Ontario:
www.foecanada.org/cleanair/fueldata.htm
