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So i always run super/premium 91-93 octane..im learning that 87octane may be better ? ..i recently added a gallon of racing fuel(110octane) to my tank that was half full already with 93..(about 30% racing fuel) i didnt really notice a difference but when i used 1/2 of that tank up i refilled again, so i would guess now my tank had 10 to 20% racing fuel mixed in and i feel like i had more power. Could just be my imagination...anywho, what do you all use and what would you recommend for an 86 stock 450 nighthawk
Ty
 

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you only need 1/2 gram of tetraethyl lead per gallon to make a difference. 100LL aircraft gas has 2 gram per gallon to take a 5 gallon can, put 4 gallons of regular unleaded in it, then add ONE gallon of 100LL to it. You will be all smiles, and your tailpipes will turn to a nice clean light color like the old days! Enjoy.
 
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