260 GT


Sunoco 260 GT is an oxygenated, unleaded gasoline designed for high performance street cars, muscle cars, classics, street rods, and the like.  It is street-legal in most states except California.  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.


Color Not Dyed
Octane (R+M)/2 100
Research Octane 105
Motor Octane 95
Specific Gravity 0.767
Weight (lbs/gallon) 6.4
Reid Vapor Pressure 6.6
Initial Boiling Point 100
10% Evaporation 144
50% Evaporation 220
90% Evaporation 228
Final Boiling Point 242
Stoichiometric Air/Fuel Ratio 14
Oxygen (weight%) 3.3
Ethanol (volume%) 9
HC Ratio 1.86
OC Ratio 0.03
Lower Heating Value (Btu/Gallon) 112500
Lower Heating Value (Btu/Pound) 17600
Dielectric Constant 12
Leaded No