HCR Plus

Sunoco® HCR™ Plus is a high performance leaded racing fuel designed for racing engines with very high compression ratios.  It is particularly beneficial in sustained high speed / high load applications such as asphalt and dirt oval racing.  HCR Plus is very resistant to vapor lock, ensuring consistent fuel metering from the green flag to the checkered flag.  Sunoco HCR Plus is recommended for engines with compression ratios exceeding 14:1.

Sunoco HCR Plus is not a street legal fuel and is for off-road and racing use only.  It contains additives to enhance stability and minimize oxidative effects.  As with any gasoline, HCR Plus should be stored in dark, tightly sealed containers where the temperature is stable.  Handled under such conditions, the shelf life of Sunoco HCR Plus is 3 years or more.

Disclaimer: Legal in California only for racing vehicles in sanctioned racing events.
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Technical Details

Octane (R+M)/2114
Research Octane118
Motor Octane110
Specific Gravity0.736
Weight (lbs/gallon)6.1
Reid Vapor Pressure5.8
10% Evaporation170
50% Evaporation217
90% Evaporation228
Stoichiometric Air/Fuel Ratio14.8
Oxygen (weight%)0
Ethanol (volume%)0
HC Ratio1.99
Lower Heating Value (Btu/Gallon)113700
Lower Heating Value (Btu/Pound)18600
Dielectric Constant0.3


  • Road Course
  • Asphalt Oval
  • Dirt Oval
  • Off-road
  • Drag
  • Truck and Tractor Pulling
  • Boats and Personal Watercraft
  • Snowmobiles
  • Miscellaneous Nitrous, Superchargers, Turbochargers