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Official Fuel of NASCAR
Every car and truck in the NASCAR Nextel Cup Series, NASCAR Busch Series, and NASCAR Craftsman Truck Series uses Sunoco Racing Fuel exclusively and displays the Sunoco logo on both front quarter panels. In addition, the familiar Sunoco diamond logo is in the entrance and exit areas of pit row.
TRADITIONAL LEADED RACE FUELS:
Sunoco Race Fuels has a wide range of traditional, leaded racing gasolines which are for off-road use only.
Standard Leaded 110 - Sunoco's all-purpose leaded racing fuel with a winning heritage, Sunoco Standard provides quality, performance, and consistency for ease of tuning. It is ideal for virtually all forms of motorsports, including circle track, drag, motorcycle, road racing, off-shore powerboat, and off-road. It also features a broad range additive package for protection from oxidation, corrosion, and deposit formation. Sunoco Standard is designed for competition engines with compression ratios up to 13:1.
Supreme Leaded 112 - A true high performance leaded racing fuel designed for sophisticated race engines which routinely function between 7,000-10,000 rpm. Sunoco Supreme is trusted by some of the most respected names in motorsports. It is specially formulated with low sensitivity to achieve a high motor octane value for increased protection against detonation under severe operating conditions. Sunoco Supreme is recommended for two-and four-stroke applications up to 15:1 compression ratio.
Maximal 116 - A leaded racing fuel for exceptionally high performance two- and four stroke applications generating high cylinder pressures, Sunoco Maximal will help protect engines w/static compression ratios up to 17:1. It has a very narrow distillation curve and a low final boiling point to help improve thermal combustion efficiency at high engine speeds. Sunoco Maximal's distinctive fast burn characteristics provide more complete combustion than slower burning fuels in applications which operate in excess of 10,000 rpm.
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Property
|
Standard Leaded |
Supreme Leaded |
Maximal Leaded |
|
Specific Gravity |
0.728 |
0.715 |
0.708 |
|
Antiknock Index (R+M)/2 |
110 |
112 |
116 |
|
RON, Research Octane |
115 |
114 |
118 |
|
MON, Motor Octane |
105 |
110 |
114 |
|
Reid Vapor Pressure |
5.6 |
6.3 |
5.9 |
| Distillation, ºF |
|
|
|
|
Initial Boiling Point |
100 |
98 |
103 |
|
10% Evaporation |
179 |
170 |
170 |
|
50% Evaporation |
222 |
219 |
217 |
|
90% Evaporation |
248 |
232 |
232 |
|
Final Boiling Point |
369 |
257 |
257 |
|
Leaded |
Yes |
Yes |
Yes |
|
Color |
Purple |
Blue |
Red |
|
Oxygen, Wt.% |
0.0% |
0.0% |
0.0% |
|
Dielectric Constant |
-0.1 |
-0.7 |
-0.9 |
UNLEADED RACE FUELS:
Sunoco Race Fuels has a number of unleaded racing gasolines available.
Sunoco 260 GT - Sunoco 260 GT is a street legal, unleaded gasoline designed for high performance street cars, muscle cars, classics, street rods, motorcycles, karts, and marine applications. With a 100 octane rating, Sunoco 260 GT will allow significantly increased boost levels in supercharged or turbocharged applications. Sunoco 260 GT contains no metallic compounds to harm catalytic converters or oxygen sensors. It contains a comprehensive additive package for greater engine protection and reduced fuel system deposits. Sunoco 260 GT is also compatible with virtually all two-stroke synthetic and mineral based motor oils.
Sunoco 260 GTX
- Sunoco 260 GTX is designed for applications that need more detonation protection than street gas provides, yet cannot use tetraethyl lead (TEL). It has been shown to produce good, repeatable power levels in engines up to 12:1 compression ratio, and will tolerate more compression in engines with modern, efficient combustion chambers. 260 GTX does not contain lead or MMT. It does not harm sensors used in fuel injection systems. It is also an excellent choice where oxygenates such as ethanol are limited or banned by the engine manufacturer or sanctioning organization.
Sunoco 260 GT Plus - One of the highest octane unleaded racing gasolines available. Sunoco 260 GT Plus is specifically formulated for the professional racer and should not be used on the street. It is highly oxygenated to help produce maximum performance in classes which allow high dielectric fuels and is an excellent choice for modern computer-controlled applications which cannot otherwise tolerate tetraethyl lead (TEL). Sunoco 260 GT Plus Unleaded is recommended for compression ratio applications up to 12:1.
|
FUEL PROPERTY |
Sunoco
260 GT |
Sunoco
260 GTX |
Sunoco
260 GT Plus |
|
Specific Gravity |
0.764 |
0.763 |
0.747 |
|
Antiknock Index (R+M)/2 |
100 |
98 |
104 |
|
|
105 |
104 |
109 |
|
|
95 |
94 |
99 |
|
Reid Vapor Pressure |
6.6 |
5.9 |
6.6 |
|
Distillation, ○F |
|
|
|
|
|
109 |
95 |
111 |
|
|
153 |
183 |
151 |
|
|
220 |
221 |
219 |
|
|
228 |
228 |
228 |
|
|
246 |
248 |
254 |
|
Unleaded |
Yes
Street Legal |
Yes
For Off-Road Use Only |
Yes
For Off-Road Use Only |
|
Color |
Clear |
Green |
Lt Blue |
|
Oxygen, Wt% |
3.3% |
0.0% |
4.8% |
|
Dielectric Constant |
11.8 |
1.4 |
17.6 |


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