G.M. $100 and $50 rebate is back for tires . B./F. discount up to

[Hershey]

Refilled with 10.01 gallons of SUNOCO 93 w/E10 at $3.70 . Got 40.269 miles calculated . A bit over 1,000 mis. on the tires and at 35 p.s.i.. Was told this region should have summer blend gas by 1st week of MAY . Hopefully will see incease in F.E.. This tank included many steep hills , gusty winds , temps in low 30s' in morning , and up to 2 > 3 people + groceries . Other 1/2 had it for 3 days to get to work . Remember this is an auto , so not so shabby . $240+ tax is good price if not that dramatic of F.E. increase over the Continental w/ Eco Plus . The 422s' seem to wear better . Time will tell .

[rikk]

Originally Posted by Hershey

Refilled with 10.01 gallons of SUNOCO 93 w/E10 at $3.70 . Got 40.269 miles calculated . A bit over 1,000 mis. on the tires and at 35 p.s.i.. Was told this region should have summer blend gas by 1st week of MAY . Hopefully will see incease in F.E.. This tank included many steep hills , gusty winds , temps in low 30s' in morning , and up to 2 > 3 people + groceries . Other 1/2 had it for 3 days to get to work . Remember this is an auto , so not so shabby . $240+ tax is good price if not that dramatic of F.E. increase over the Continental w/ Eco Plus . The 422s' seem to wear better . Time will tell .

why do you use 93 octane?

[muffin_top]

Originally Posted by rikk

why do you use 93 octane?

I second this question? Your car will adapt to the 93 octane and spray more of it to get the same burn as 87 octane. Given what you've done to get better mileage, I don't understand why you would run higher octane "premium" gas. If you had some way of watching your fuel trims between the two you would see why we are concerned. Run 87, trust us on this!

We tell noob Prius drivers to avoid the 93 because it hurts the mpg's.