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I worked for a fbo a year ago and was qc for 100ll and jet-a i had endless supply of 100ll and gave 100s of gallons to racers who wanted some, 100ll is a slightly lighter specific gravity compared to auto gas,in other words its lighter in weight,it has no additives compared to auto gas it does have stablilizer cuz some planes sit in hangars for a while, it does not cause corrision, if it did it wouldnt be safe for aircraft, it has ALMOST zero water in it, there is no additive to displace water in gasoline,at high altitudes water will freeze in the fuel lines and would block the fuel to the aircraft motor and down it will go,sumping aircraft fuel tanks are a must before flights, an aircrafts engines toughest chore is to get down the runway and up to speed,so its safe to use just re jet slightly for it and add some marvel mystery oil i can go on and on but hope this helps.

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