Not sure about the ethanol content.....My wife fill sup with regular (87 octane) up here in New Jersey. The dealer (Wayne Mazda) advised that higher octane would not effect my mileage. When does the ethanol content change in th eyear to get better mileage??? Thanks!
There is something definately wrong with my 2008 CX-9 FWD. My wife drives it around in this little suburban North New Jersey town. Leased it in 11/2007 and only have 2500 miles on it. I don't buy the B.S. from the service manager that it takes 5000 miles to "break in". Oh then my gas mileage...