Re: Fuel Grade
I've been running 91 ever since I got the car and its been on 91 for over 30k miles and I have been getting 37-41 mpg (my own calculations and not whats read in the screen)
I then switched to 89 and now get 35-37 mpg with no changes in my driving patterns or conditions. I couldn't believe the difference so I have run 4 full tanks on 89(~2100 miles) . I am switching back to 91 now and I'll let you all know how things go.
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