I out 93 in yesterday and will run it for a few tanks. It is my wife's daily driver and her route is always the same so without telling her, I am curious to see her average now. She gets 21.6-21.9mpg on 87 consistently. Where I filled up was 40 cents more per gallon so about $6 a tank each week more.
So 1st tank of 93 and my wife topped off and mixed 87 mid week. So much for getting a good test of 93.
Anyways mixed gas, same commute got us 23mpg so over 1 full mpg more, same commute and driving habits. Put another tank of 93 and told her to keep putting 93 in. I am assuming I'll be a full 2mpg more with 93. If that's the case with a 40 cent premium , It would be costing me $6 a tank roughly more and then subtract the 1 1/2 gallons of fuel savings per tank ($5.40 @ $2.64/gallon).
Will report back after another week
Were you able to see any improvements with 93?
My first 30 or so miles, i'm getting just 10mpg. Did you guys see same? Little too early but i'm kinda worried.
Yeah, I’m getting ~22.5 on 93 on a full mixture of driving conditions. Very happy, as I was lucky to get 18 on the old Flex.I am getting about 22.5mpg per tank. I figured I am saving about $2 per tank with the increased mpg of about 1-1.5. It is a $7.50 increase in cost do I am betting about a $5 increase per tank (1 tank a week). So fuel is about $20 more a month for me to run 93 instead of 87.
I'm willing to bet in the summer heat with summer blend I would double that and net $3 or so more per tank taking mpg increase vs cost increase into account.
Reality is, I am ok with $5 more a week to get optimum performance.
The Manual suggests waiting until you have 2000 miles on the engine before starting to do regular mpg checks.We are getting 23 mpg highway on round trips from sea level to mountain level here in nh.
By comparison my 4x4 Colorado 3.6 v6 gets 25mpg on that trip with 93 octane, and our dodge journey 3.6 v6 gets 26mpg, 87 octane.
Im thinking it Should get better as everything loosens up with the ST.
The discussion will be all about batteries, which will need significant improvement before an electric vehicle will be suitable to my use.
Where I fill up, 91 is approx. 65 cents (CDN) a US gal. more than 87.
Peter