Re: 89 octane for 5.7 Hemi recommended?
Regular is $4.15 in the resort areas of Vail and Avon, CO so I wait till I have a reason to go towards the Costco store 20 miles away where it is $3.85 today.
Anyone know why Costco doesn't have mid-grade, only regular and premium?
I fill up half with premium, let the pump shut down, re-insert my card for regular. I can usually judge pretty close to half and half.
Today my mileage for the 2012 5.7 for the last 3,000 miles of mixed interstate and local mountain road driving is 18.6 mpg calculated. EVIC was 17.8 but had just come up a big hill after seeing 19.5 or so on the interstate. Usually the two are closer together.