filling up at the pump really hurts. i spent $54 to fill up my car just a few minutes ago. I heard from a friend that you car will go futher on premium rathar than regular. I thought, ok.. i’ll try this out
on 5/21/08 i went to Valero on Pike and Texas in weslaco.
purchased 12.181 gallons of premium
6 days later i traveled 225.5 miles
on 5/27/08 i went to exxon on nolana and 10th st in mcallen
purchased 12.913 gallons of regular
6 days later i traveled 254.3 miles
So the premium gave me 18.51 mp/g, the regular gave me 19.69 mp/g
A cost savings? not on this trip. I might need to give it more time to “take” but at the cost of fuel. not something i want to $pend to much experimenting on.