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Fuel additives 63 Avanti

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  • Fuel additives 63 Avanti

    What is recommended for fuel additive for 63 Avanti and how often? Thanks!

  • #2
    Just buy the highest octane gas you can find, like 93 with no 10% ethanol if possible. Don't worry about adding lead subsitutes; they aren't needed, provided you don't run your car really hard or pull a trailer or something. Russ Farris
    1963 GT Hawk R-2 4-speed
    1964 Avanti R-1 Auto

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    • #3
      About the only fuel additives worth using are a good isopropyl alcohol "gas dryer"...it absorbs any moisture in the tank and allows it to burn with the fuel. Making sure your gas tank is as full as possible also keeps condensation from forming on the tanks walls.

      The other additive worth using is a gasoline stabilizer during long periods of inactivity or storage.




      Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, cocky and in general a malcontent.
      Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, cocky and in general a malcontent.

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      • #4
        A friend did a study regarding the ethanol issue for a chapter newsletter. His conclusion was to recommend using STA-BIL in the fuel. Using 4 oz. of STA-BIL and 4 oz. of Marvel Mystery Oil in 10 gal. of the highest octane fuel available appears to have eliminated post-detonation issues with my Avanti R-1. During times of inactivity I try to keep the tank full to inhibit condensation.

        "It's like deja vu all over again."--Yogi Berra
        "Growing old is mandatory, but growing up is optional." author unknown

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        • #5
          In my R-2 I use 103-lowlead aircraft fuel. Get it from my buddy at the airport 4.75/gal.no additives needed.

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          • #6

            I fill my Avanti with 110 leaded Sunoco race fuel...200.00 bucks will get me a full tank!.........



            quote:Originally posted by big jim

            In my R-2 I use 103-lowlead aircraft fuel. Get it from my buddy at the airport 4.75/gal.no additives needed.

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            • #7
              Yes, I use 100 oct Avgas in my R-1 Avanti and R-2 GT but the average Stude owner might have problems getting it. If you have a small, local airport check with them. 4.35 a gallon in South Carolina, the cars love it and no vapor lock issues...the shelf life is measured in years! Russ Farris
              1963 GT Hawk R-2 4-speed
              1964 Avanti R-1 Auto

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              • #8
                I give my Studebakers a few gallons of avgas when I feel like spending the money for it. I've found that 5 or 6 gallons of 100LL added to pump gas works wonders and stops any detonation. I also use Lucas octane booster and that works well too. One bottle of the Lucas additive in a tank of gas and the Avanti stops pinging even in hot weather. The problem in the Los Angeles area is most of the FBO's don't want sell avgas to anyone but aircraft operators. I buy it when I go flying and no one is around the fuel pit. Bud

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