Can a gas car engine run on pure octane booster?

This guy experimented on lawnmower engines and concluded they ran very well on octane booster, but can car engines run on pure octane booster?

  • Seems you already have your answer? Sep 8 at 21:10
  • I wouldn't do it. These products are intended to enhance the octane rating of gasoline not replace it.
    – jwh20
    Sep 8 at 21:49
  • @jwh20 I suppose I could rephrase my question: "Can a gas car engine run off jet fuel?" Jet fuel has a very high octane rating.
    – Geremia
    Sep 8 at 22:21
  • @Geremia - That was a 4-stroke engine. Besides, combustion is combustion. And Jet Fuel is very refined kerosene (for the most part). Sep 8 at 23:37
  • Jet fuel has low octane similar to kerosene . Octane booster is likely ethanol or a mix of alcohols . Another possibility is aromatics like xlyenes( used in avgas). Sep 9 at 0:25

I cheated and looked on the net instead of guessing. Booster is likely either ethanol ( octane 113) , or aromatics xylene ( octane 117 ) , toluene (octane 114). I think these are R+M/2 octanes, but the sites were not specific. Jet fuels are very low octane because they are mostly kerosene with some naphtha . I think it is the naphtha that gives it a little octane. Different jet fuels are different blends so no specific answer. And , you can run an engine on aromatics , some will say it is bad but I don't think so. Pure ethanol may need some engine adjustments to run, like 30 % more fuel through the injectors. Ethanol must have something mixed with it ,(like other alcohols) or it would require a liquer tax (US).

  • 1
    And will the higher concentration kill the seals in the fuel system?
    – Solar Mike
    Sep 9 at 5:15
  • It did , but now since all gasoline ( US) must contain ethanol the seals ,etc , have been improved. Sep 9 at 14:30

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