Fuel Finder

FR

Sunoco® FR™ is an unleaded oxygenated race fuel that performs well in turbocharged engines as well as air-restricted naturally aspirated engines that can benefit from an oxygenated racing fuel. It complies with certain race fuel regulations limiting oxygen to 4 volume percent.

Sunoco FR contains additives to enhance storage life. Sunoco FR will not harm oxygen sensors and can be used in any racing application requiring an unleaded fuel. As with any gasoline, FR should be stored in opaque sealed containers where temperatures are stable.

Technical Details

  • Color
    Not Dyed
  • Octane (R+M)/2
    96
  • Research Octane
    102
  • Motor Octane
    90
  • Specific Gravity
    0.76
  • Weight (lbs/gallon)
    6.4
  • Reid Vapor Pressure
    9
  • Initial Boiling Point
    99
  • 10% Evaporation
    139
  • 50% Evaporation
    217
  • 90% Evaporation
    233
  • Final Boiling Point
    262
  • Stoichiometric Air/Fuel Ratio
    14
  • Oxygen (weight%)
    3.7
  • Ethanol (volume%)
    10
  • Methanol
    0
  • Lower Heating Value (Btu/Gallon)
    115900
  • Lower Heating Value (Btu/Pound)
    18120
  • Dielectric Constant
    15
  • Leaded
    No

Applications:

  • Road Course
  • Asphalt Oval
  • Rally
  • Motorcycle Road Course
  • Off-road Motorcycle and ATV
  • Karts
  • Snowmobiles

Sanctioning Bodies

  • F3 Cup

Tech Corner

Specific Gravity – What Is It And Why Does It Matter?

Specific Gravity Definition: specific gravity (noun) - the ratio of the...

Fuel Metering Basics for Oxygenated Fuels

We get a lot of questions about fuel metering changes required for oxygenated...

Race Fuel Storage

Race fuels generally last longer than typical pump gas but often times race...