SR18

Sunoco SR18® is our ultimate high octane, fast burning racing fuel. If you have a high compression, high RPM race engine, 118 octane Sunoco SR18 is your fuel of choice.

SR18 is an excellent choice for drag racing and truck pulling, especially large displacement applications. For oval course and road racing applications, SR18 will tolerate the high cylinder pressures in racing classes where there are no compression ratio limitations.

Sunoco SR18 is for off-road and racing use only. It contains additives to enhance stability and increase storage life. As with any gasoline, SR18 should be stored in opaque, tightly sealed containers where temperatures are stable. Handled under such conditions, the shelf life of Sunoco SR18 is 2 years or more.

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

Legal:
For off-road and racing applications only.

Technical Details

Color

Yellow
Octane (R+M)/2

118
Research Octane

120
Motor Octane

116
Specific Gravity

0.704
Weight (lbs/gallon)

5.9
Reid Vapor Pressure (PSI)

6
Initial Boiling Point (°F)

99
10% Evaporation (°F)

166
50% Evaporation (°F)

209
90% Evaporation (°F)

213
Final Boiling Point (°F)

223
Stoichiometric Air/Fuel Ratio

15.1
Oxygen (weight%)

0
Ethanol (volume%)

0
Methanol (volume%)

0
H/C Ratio

2.2
Lower Heating Value (Btu/Gallon)

111000
Lower Heating Value (Btu/Pound)

18950
Leaded

Yes

Applications:

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

SR18

Technical Details

Applications:

Sanctioning Bodies

Tech Corner

Hemmings Hot Rod BBQ Interview

RVP and Pressure Vapor

Octane Stability: High Octane vs Low Octane Fuels