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    #1

    fuel economy

    What kind of mileage are you getting these days? I was getting a steady 17-18 for a while and for the past two fill-ups I've been driving the car a bit harder and more often (trying the "italian tune up" method) and the first fill was 19 and now I'm getting high 19s while pushing the car, locking out OD and letting the engine rev up when I have some distances to cover at moderate speed (55-60mph+). Neat!



    yeah, what mileage are you getting? 302 or 351?
    sigpic


    - 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims

    - 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust

    - 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock
    Tags: results may vary
    #2
    and what kinda gas
    sigpic


    - 1990 Ford LTD Crown Victoria P72 - the street boat - 5.0 liter EFI - Ported HO intake/TB, 90 TC shroud/overflow, Aero airbox/zip tube, Cobra camshaft, 19lb injectors, dual exhaust w/ Magnaflows, Cat/Smog & AC delete, 3G alternator, MOOG chassis parts & KYB cop shocks, 215/70r/15s on 95-97 Merc rims

    - 2007 Ford Escape XLT - soccer mom lifted station wagon - 3.0 Duratec, auto, rear converter delete w/ Magnaflow dual exhaust

    - 2008 Mercury Grand Marquis Ultimate Edition - Daily driver - 4.6 2 valve Mod motor, 4R75E, 2.73s. Bone stock

    Comment

      #3
      I run premium, but with a 302 and a lead foot I still only get about 12-15 average.

      But I also have some running issues I'm still working on.
      1984 Ford Crown Vic LTD, The Murphmobile (RIP)
      1985 Ford Crown Vic LTD, The Murph Deuce (SOLD)
      1978 Chevrolet Caprice Classic, The Crapiece (current project)

      Comment

        #4
        87 octane regular unleaded is now getting me around 16mpg leadfooting it on the highway with about 30% city. If I would stop gunning it all the time i would probably get 18-19.

        Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
        rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

        Originally posted by gadget73
        ... and it should all work like magic and unicorns and stuff.

        Originally posted by dmccaig
        Overhead, some poor bastards are flying in airplanes.

        Comment

          #5
          Man, I can't wait to drive mine when I get it..... considering my Dad's Durango only gets about 11-12 in the city.
          '97 Cadillac Catera - 3.0 DOHC V6, 75k
          Soon... Any '95+ Panther!
          CLICK ME! Parts For Sale, SUPER CHEAP!!!

          Comment

            #6
            Canadians (and northern US residents) will be seeing their gas mileage go up around this time as they switch to the more efficient summer gas formulas. That's probably what you're seeing 1990LTD

            85 4 door 351 Civi Crown Victoria - Summer daily driver, sleeper in the making, and wildly inappropriate autocross machine
            160KMs 600cfm holley, shorty headers, 2.5" catted exhaust, 255/295 tires, cop shocks, cop swaybars, underdrive pulley, 2.73L gears.
            waiting for install: 3.27's, Poly bushings, boxed rear arms, 2500 stall converter, ported e7's, etc

            06 Mazda 3 hatch 2.3L 5AT (winter beater that cost more than my summer car)

            Comment

              #7
              yeah... what is the difference between summer/winter formulas and why is it needed?

              Being a native Texan, I've never been educated on this.

              Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
              rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

              Originally posted by gadget73
              ... and it should all work like magic and unicorns and stuff.

              Originally posted by dmccaig
              Overhead, some poor bastards are flying in airplanes.

              Comment

                #8
                302 w/3.27 rear, 87 octane

                getting 15-17 city, and 23-24 highway

                Comment

                  #9
                  My 91 with 3.55's mostly highway with a little city driving got 20-22 in the summer. Winter more around 17-19
                  The wagon got 19 average on it's long journey and that was with supper ultra hilly highway driving.
                  2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
                  2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
                  2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
                  1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

                  Comment

                    #10
                    19 - 20 with 87 octane.
                    89 CV LX 225/60 x 16 tires, CC819 rear springs, Front & rear sway bar, trans & PS cooler from 90 cop car. KYB shocks, F-150 on rear. Dual Exhaust w/ H pipe. Dark brown door panels, carpet, steering wheel, trim parts from a 87 Mer GM. Power front buckets from 96 Jeep Cherokee. LED'S front & rear. 3G Alt from a 97 Taurus wagon 3.0. Electric fan. Rear axle from a 97 PI 3.27 with disk brakes. Headlight relays.

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