260 GT

Sunoco 260 GT is a street-legal, oxygenated, unleaded gasoline designed for high performance street cars, muscle cars, classics, street rods, motorcycles, and the like.  With a 100 octane rating, Sunoco 260 GT will allow increased boost levels in supercharged or turbocharged applications compared to lower octane “pump” gas.

Sunoco 260 GT will not harm catalytic converters or oxygen sensors.  260 GT contains a comprehensive additive package for greater engine protection and reduced fuel system deposits.  It is compatible with two-stroke synthetic and mineral-based engine oils.  As with any gasoline, it should be stored in opaque, tightly sealed containers and kept where temperatures are stable.  Properly stored, the shelf life of 260 GT is in excess of 1 year.

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

ColorNot Dyed
Octane (R+M)/2100
Research Octane105
Motor Octane95
Specific Gravity0.734
Weight (lbs/gallon)6.1
Reid Vapor Pressure6.4
10% Evaporation145
50% Evaporation211
90% Evaporation216
Stoichiometric Air/Fuel Ratio14.1
Oxygen (weight%)3.7
Ethanol (volume%)9.8
HC Ratio2.02
OC Ratio0.034
Lower Heating Value (Btu/Gallon)109200
Lower Heating Value (Btu/Pound)17900
Dielectric Constant11


  • Road Course
  • Asphalt Oval
  • Dirt Oval
  • Off-road
  • Rally
  • Drag
  • Truck and Tractor Pulling
  • Motorcycle Road Course
  • Off-road Motorcycle and ATV
  • Karts
  • Boats and Personal Watercraft
  • Snowmobiles
  • Muscle Cars and Vintage Cars
  • Miscellaneous Nitrous, Superchargers, Turbochargers