My 97 Aero std. can top 30 on highway trips and gets 26-27 with mixed driving short rural trips locally and use of heavy boost. My dads 97 CSE auto gets 26-28 with mixed driving short rural local trips and highway not much heavy boosting going on. My 98 CSE auto hasn't performed nearly as well getting from 23-26 with the same driving habits ( this was before the the brass tube fell out of the intake and the car went to base boost with a giant hole in the intake fell out. Now repaired, boost is back, less downshifts in the 35/45 mph range and grades. Hoping it gets to the 26-28 range on mixed driving. These are all using regular. Regular gas based boost can still spin the tires on all of them. All using 205s for tires.

posted by 24.218.23...

• NPR said Premium gives better mileage to off set cost, Don Wollum, Tue, 20 Mar 2012 16:05:06
  • Re: NPR said Premium gives better mileage to off set cost, DickT , Thu, 22 Mar 2012 03:50:52
  • The only right answer..., Larry West , Wed, 21 Mar 2012 08:44:23
    • Lots of variables most don't think about, Noel, Wed, 21 Mar 2012 09:13:03
  • What's wrong with 27.5 mpg??, Noel, Wed, 21 Mar 2012 06:23:48
  • what's your point ??, dref, Tue, 20 Mar 2012 19:54:41
    • 31 MPG on a 16 year old car with 200k is abysmal???, turrbo , Tue, 20 Mar 2012 20:17:41
      • I've personally never ..ever.. even seen past 26mpg, dref, Wed, 21 Mar 2012 08:12:53
        • Re: I've personally never ..ever.. even seen past 26mpg, TML , Wed, 21 Mar 2012 13:48:00
          • Hard to do direct comparisons..., Noel, Thu, 22 Mar 2012 06:25:00
          • I too doubt reports of mileage attained..., RayF, Wed, 21 Mar 2012 17:38:43
            • My take with 3 97/98s and the same 2 gas stations, JeffB, Thu, 22 Mar 2012 09:32:30 <-- Viewing This Message
            • Re: I too doubt reports of mileage attained..., TML , Wed, 21 Mar 2012 18:35:58
            • Make that miles divided by gallons, of course., RayF, Wed, 21 Mar 2012 17:42:11
  • does your check engine light come on?, rob 96 aero, Tue, 20 Mar 2012 17:46:28
    • Run 3 -9000s on regular, 1 Aero and no light, JeffB, Tue, 20 Mar 2012 18:26:44
  • NPR is wrong, and NPR is right, marvinstockman, Tue, 20 Mar 2012 17:42:24
    • Re: NPR is wrong, and NPR is right, aka oldsaab, Tue, 20 Mar 2012 22:12:12
  • Re: NPR said Premium gives better mileage to off set cost, PT, Tue, 20 Mar 2012 16:34:02
    • Re: NPR said Premium gives better mileage to off set cost, Larry West , Wed, 21 Mar 2012 08:32:34
    • Re: NPR said Premium gives better mileage to off set cost, Don Wollum, Tue, 20 Mar 2012 17:18:17

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