Okay...so if all the gasoline is the same everywhere
and the difference only lies in the additives seems like you could save some money by using the cheapest gas available and putting your own additive in such as neutra or Red Line CFSC.
Around here something like Speedway or Citgo is around $.10 cheaper than BP Amoco. In a 15 gal fillup that will equal $1.50/tank. A 15oz bottle of Red Line SI-1 costs about $4.99 at Pep Boys and treats 100gal. That's $.50/tank. Saving $1.00/tank.
I get a discount with my BP card now so the difference will be less for me and maybe not worth the hassle of adding additives every tank. But otherwise seems like a good option...
Around here something like Speedway or Citgo is around $.10 cheaper than BP Amoco. In a 15 gal fillup that will equal $1.50/tank. A 15oz bottle of Red Line SI-1 costs about $4.99 at Pep Boys and treats 100gal. That's $.50/tank. Saving $1.00/tank.
I get a discount with my BP card now so the difference will be less for me and maybe not worth the hassle of adding additives every tank. But otherwise seems like a good option...