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  • Seafoam & 420 Miles To The Tank = 27MPG

    Correct me if I'm wrong...

    I just got an astounding 420 highway miles to the tank. This is my latest calculation I received after I threw in a can of Seafoam in the fuel tank just when I was barely running on fumes and proceeded to locate a Mobil gas station.

    My calculation: 420 miles divided by 15.5/gallons in my fuel tank = 27.096 MPG. I could have went beyond the 420 miles but wasn't going to gamble on running out of fuel and looking like an idiot but the fuel needle was definitely past the E mark.

    Anyhow, my local Mobil fuel station was selling regular 87 unleaded at $3.259 a gallon.
    I forked out $50.00 to fill my tank up to 15.3 gallons topped off so I concluded my gauge was correct in the 15.5 gallon tank capacity.

    Before expending all the 15.3 gallons of fuel, I recently threw in 6 new NGK-TR55 iridium spark plugs along with new wires with a new Fram Air filter and 5 quarts of Castrol 20W-50 plus oil filter and inflated the 4 radial tires to 37 PSI, fuel filter, fresh manual transmission & rear end differential fluids were changed and reset my trip odometer to zero. My commute has increased due to a better paying job and not hammering the GO pedal at all.
    Just gentle acceleration on my perfectly stock, no exhaust or intake mods yet M5 Camaro is all it took to acheive this latest finding.

    This 27 MPG result is still baffling me but the math doesn't lie. My V6 and I are happy for now 'til someone here can prove me wrong.

    Anyone have a similar finding to share?
    Black \'96 RS Camaro, 3.8 V6 Series II, M5, Stock 200 HP, 204K miles! Stock \'91 Firebird 3.1 V6 automatic w/ overdrive. 266,400 miles on it. \'83 Pontiac Trans Am,305 LG4, Cowl Induction,Borg Warner 5 Speed,T-Tops,Gale Banks Exhaust System:$800 obo

  • #2
    Re: Seafoam & 420 Miles To The Tank = 27MPG

    i easily get 20MPG on my 3.8L A4 with just intake, and no cat exhaust system.

    and thats if i give it a lil gas every once in a while

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    • #3
      Re: Seafoam & 420 Miles To The Tank = 27MPG

      i always get 27mpg highway, 20-50 oil is too thick for your engine, id recommend 10-40.
      <a href=\"http://www.cardomain.com/ride/2245261\" target=\"_blank\">http://www.cardomain.com/ride/2245261</a> Green 1997, 105k, all stock except for Z28 front springs, Air shocks in the rear, home made coolant recovery tank, home made battery hold down.

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      • #4
        Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

        we all know stock oil recommendation is 10w-30, just restating it
        2k2 camaro, K&N, SLP whisper lid, Konis, AEM, HP Tuners, Angel eyes/Halos, CF SS ram air hood, 4.10s, Zexel Torsen, UMI SFCs, CrossFire, BFGs, Gatorback, Catco, Flows, and TLC! DONT feed the Trolls!

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        • #5
          Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

          last time I went to NC from here, I calculated 32-34 mpg
          Rebuilding the engine... Building a custom front end... T-top conversion... Custom rear hatch..
          Custom interior...

          TEAM NoVa

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          • #6
            Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

            i got an even 30mpg highway back when the damn thing ran good. 75 mph with the windows down.
            2000 3.8L Camaro A4 Pewter Y87<br />K&N Filter, SLP Ram Air kit, Eibach Pro Kit, Flowmaster 80 series, Silverstars, NGK plugs and MSD Super Conductor Wires, Electric Water Pump

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            • #7
              Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

              i went from illinois to florida, mainly all easy goin, highway driving and i got 35mpg
              *Matt


              Old people shouldnt use the internet.

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              • #8
                Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                i fill my tank at around 250 miles, looks like i'm getting some pretty crappy mileage, right now i'm at a hair above 1/4 and i have 200 on the trip :(

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                • #9
                  Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                  what is sea foam? I never heared of it b4
                  2002 Firebird<br /> <a href=\"http://www.cardomain.com/ride/2106142/1\" target=\"_blank\">http://www.cardomain.com/ride/2106142/1</a>

                  Comment


                  • #10
                    Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                    search for it and you will find 2363475345263434574765863576356245764 topics

                    Comment


                    • #11
                      Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                      well a simple......you know what nevermind. Thanks
                      2002 Firebird<br /> <a href=\"http://www.cardomain.com/ride/2106142/1\" target=\"_blank\">http://www.cardomain.com/ride/2106142/1</a>

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                      • #12
                        Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                        I get about 32 in the city and 34 on the highway...or so :)
                        2000 3.8 A4 Pewter Camaro

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                        • #13
                          Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                          Originally posted by BLLDOGG
                          I get about 32 in the city and 34 on the highway...or so :)
                          wow your car is running really good, I thought I saw a grandma driving your car. ;)
                          http://www.bowtiev6.com/

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                          • #14
                            Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                            Last week I took a 400+ mile trip and got 27mpg, A/C on and going 85-90mph the whole way. Once I got either 33 or 35 mpg, 80mph and the windows up with no A/C. I think our cars get very good mileage when we let them. And they're way more fun than a Prius.
                            2002 Silver Firebird A4<br />T-Tops, Leather, Y87, W68, Chrome Wheels<br />Bone Stock

                            Comment


                            • #15
                              Re: Seafoam &amp; 420 Miles To The Tank = 27MPG

                              Originally posted by 97rs4life
                              wow your car is running really good, I thought I saw a grandma driving your car. ;)
                              whatever it takes
                              2000 3.8 A4 Pewter Camaro

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