Sunoco Maximal is a 116 octane, extreme performance leaded racing fuel designed for high revving racing engines with high compression ratios.  Maximal’s fast burn rate makes it particularly beneficial in large-bore, large-displacement naturally-aspirated drag racing applications.  It has also proven to be very popular in the highly-stressed naturally-aspirated big blocks used in truck pulling.  Sunoco Maximal is very resistant to vapor lock, ensuring consistent fuel metering between passes.

Sunoco Maximal is for off-road and racing use only.  It contains additives to enhance stability and minimize oxidative effects.  As with any gasoline, Maximal should be stored in opaque, tightly sealed containers where temperatures are stable.  Handled under such conditions, the shelf life of Sunoco Maximal is 3 years or more.


Color Red
Octane (R+M)/2 116
Research Octane 118
Motor Octane 114
Specific Gravity 0.708
Weight (lbs/gallon) 5.9
Reid Vapor Pressure 6
Initial Boiling Point 89
10% Evaporation 148
50% Evaporation 215
90% Evaporation 231
Final Boiling Point 252
Stoichiometric Air/Fuel Ratio 15.2
Oxygen (weight%) 0
HC Ratio 2.16
Lower Heating Value (Btu/Gallon) 111500
Lower Heating Value (Btu/Pound) 18900
Dielectric Constant -1
Leaded Yes