Originally posted by wheregreggeats.com
Does anybody choose the high test (premium) gas ???
My gas cap says 89 (Mid Grade) on it. After chatting with another owner of same model at the pump who said his runs much better and gets better mileage with Premium, I set the trip meter and ran it down to where the onboard comp. said I had was out, then filled it up with Premium.
I think it runs better, but it may be all in my head.
But the math doesn't lie, as I got 295 miles out of the Mid grade and 332 out of Premium. I drove much the same and paid close attention to idling, flooring the gas, street/hiway etc.
I was so surprised, I did the whole comparison again.
I came up 302 mi. for Mid and 337 for Prem.
Using Mid Grade, I had always filled up at around 280-290 miles which was long after the light went on and now I fill up around at about 315-325 and it's about the same amount of gallons.
For my appr. 16 gallons, the difference buying Premium over Mid Grad is $2.08 but it would cost about $9.00 of the Mid Grade to take me the distance of the Premium.
Yes, I use Premium.