Hey Paul thanks for the info! Yeah, my first gas-up here was at a Citgo, didn't know better.
When you said the premium gas has lower sulfur content than regular, were you speaking about all gases across the States in general, or only specifically about CA premium and regular?
If it's true for all states, Sunoco 94 should contain less sulfur then Sunoco 93 or any of the other 93 brands?