HI-TEST is a concentrated octane booster legal for all types of competition. All organic product containing no metal (lead, manganes or phosphorus) compounds. It readily mixes with all gasoline’s as well as alcohol and nitro mixtures. Suppresses detonation and pre-ignition by modifying the burn rate and increasing the auto-ignition temperature of the air/fuel mixture. With use in gasoline it will eliminate “pinging” and “knocking” and the potentially destructive results of them. It will allow for higher compression ratios and therefore more horsepower.



  • Raises octane level
  • Stops knock & ping
  • Increases horsepower
  • For 2-stroke or 4-stroke engines
  • Cleans fuel systems


Hi-Test should be used in concentrations of one to four ounces per gallon of gasoline. One ounce per gallon raises the effective octane number approximately four points, depending on the base gasoline octane. For racing, very high compression engines, or very low quality fuel, higher concentrations of Hi-Test may be required.

Technical Data

  • Pounds Per Gallon 7.19
  • Kauri Butanol Value 105
  • Specific Gravity 0.863
  • Viscosity SUS @ 210°F 60
  • Viscosity cSt @ 40°C 52.9
  • Viscosity cSt @ 100°C 9.4
  • Flash Point °F 43°F


Safety Data Sheets

Our Safety Data Sheets (SDS) provide up-to-date and accurate information on the material handling of this product.

PDF View Safety Data Sheet

Additional information

Weight 1.5 lbs


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