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I have not used additives in a long time. I did recently do a test on gasoline. There is a difference. At the dragstrip I was getting knock retard on 93 octane from Sams. I added 5 gallons on 110 race gas to 5 gallons of Sams 93 and got zero knocks. I did this to be sure I had no mechanical issues. I tried 93 from Caseys and also got knock retard. Finally tried 93 from Sunoco and got almost no knock retard. So, when I race I will use Sunoco 93.
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Keep talking, Im gonna put you in the trunk.
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