Race cars on track

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.


Legal in California only for racing vehicles in sanctioned racing events.


For off-road and racing applications only.

Technical Details

Color Orange
Octane (R+M)/2 114
Research Octane 118
Motor Octane 110
Specific Gravity 0.736
Weight (lbs/gallon) 6.1
Reid Vapor Pressure 5.8
10% Evaporation 170
50% Evaporation 217
90% Evaporation 228
Stoichiometric Air/Fuel Ratio 14.8
Oxygen (Weight%) 0
Ethanol (Volume%) 0
HC Ratio 1.99
Lower Heating Value (Btu/Pound) 18600
Lower Heating Value (Btu/Gallon) 113700
Leaded Yes


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

Sanctioning Bodies

Tech Corner

Diving Deeper into Leaded Race Fuels

From the editors of Lead was legislated out of pump fuel...

Other Factors to Consider When Buying a Race Fuel

From the editors of How do you select the proper fuel...

One Way to Wade into the World of Race Fuels

From the editors of When do you think about making the...

View All