Just curious what type of street premium (93 octane) gas do you use. Basically I seen at a shell station that thie premium gas was enriched with nitrogen. Or is this just marketing/false advertising. Is It better than any other premium gas. Just was curious cuz I work across the street from a shell station.

 

to me, chevron and shell perform the same.
here in WA, we only have 92 octane

 

The nitrogen is part of the additive package. Won't affect performance, just increases the detergent properties.

 

ok thanks!