Sunoco Standard 110 Octane Race Fuel

Sunoco Standard 110 Octane Race Fuel

Leaded 110 Octane Fuel for High-Compression and Mild Power-Adder Racing Engines

Sunoco Standard is a leaded 110 octane race fuel designed for a wide range of motorsports and dedicated off-road racing applications. Commonly called Sunoco 110 or Sunoco Purple, this non-oxygenated racing gasoline has a 110 (R+M)/2 octane rating, 114 Research Octane Number, and 106 Motor Octane Number.

This 110 octane fuel is designed for compression ratios up to about 13:1 in conventional small block V8 engines with cast iron cylinder heads. Sunoco Standard is commonly used in naturally aspirated racing engines and can also be suitable for mild nitrous, turbocharged, and supercharged applications.

Key Benefits

• 110 octane rating for racing engines requiring increased knock resistance
• Leaded racing gasoline for dedicated racing and off-road applications
• Non-oxygenated formulation with 0% oxygen by weight
• Ethanol-free with 0% ethanol by volume
• Consistent fuel properties to support repeatable engine tuning
• Broad motorsports compatibility across naturally aspirated and mild power-adder applications
• Storage stability with a shelf life exceeding 2 years when properly stored
• Purple color for easy fuel identification

Where to Use Sunoco 110 Race Fuel

Sunoco Standard 110 is intended for dedicated racing and off-road engines that require a leaded, high-octane gasoline. Recommended motorsports applications include:

• Drag racing
• Asphalt oval racing
• Dirt oval racing
• Road course racing
• Rally racing
• Off-road racing
• Motorcycle road course racing
• Off-road motorcycle and ATV racing
• Karts
• Boats and personal watercraft
• Snowmobiles
• Truck and tractor pulling
• Muscle and vintage cars
• Mild nitrous, turbocharged, and supercharged racing applications

Sunoco Standard is not legal for on-road use and is intended for racing and off-road applications. In California, it may only be used in competition racing vehicles as permitted by applicable regulations.

Engine and Compression Ratio Guidance

Sunoco Standard is designed for compression ratios up to approximately 13:1 in conventional small block V8 engines with cast iron cylinder heads. Engines with smaller or more efficient combustion chambers may tolerate higher compression ratios.

Compression ratio is only one factor when selecting race fuel. Combustion chamber design, cylinder pressure, ignition timing, engine temperature, RPM, boost, nitrous use, and other operating conditions can affect the octane requirement of an engine.

Most Sunoco Standard applications are naturally aspirated, but Sunoco also identifies this 110 racing fuel as suitable for mild nitrous, turbocharged, and supercharged combinations. More demanding power-adder applications may require a different fuel depending on the engine combination.

Leaded Fuel Compatibility

Sunoco Standard is a leaded 110 octane gasoline. Leaded racing fuel should not be used in vehicles equipped with catalytic converters or oxygen sensors because lead can damage these components.

This fuel is intended for dedicated racing and off-road vehicles designed or configured for leaded gasoline. Confirm the required octane, fuel type, and tuning requirements with the engine builder, tuner, or equipment manufacturer before changing fuels.

Storage and Shelf Life

Sunoco Standard contains an additive package designed to improve storage stability and minimize oxidation.

For proper race fuel storage:

• Store fuel in an opaque container
• Keep the container tightly sealed
• Store the fuel where temperatures remain relatively stable
• Limit exposure to air, moisture, and direct sunlight

When stored properly, Sunoco states that the shelf life of Standard race fuel is in excess of 2 years.

Technical Details

Typical properties represent current production data and may vary.

Frequently Asked Questions

What is Sunoco 110 race fuel?
Sunoco Standard is a leaded, non-oxygenated racing gasoline with a 110 (R+M)/2 octane rating. Commonly called Sunoco 110 or Sunoco Purple, it is designed for dedicated racing and off-road engines requiring greater knock resistance than typical pump gasoline.

What octane is Sunoco Standard race fuel?
Sunoco Standard is rated at 110 octane using the (R+M)/2 method. It has a Research Octane Number of 114 and a Motor Octane Number of 106.

Is 110 octane fuel leaded?
Not every 110 octane racing fuel has the same formulation, but Sunoco Standard 110 is leaded. It should not be used in vehicles equipped with catalytic converters or oxygen sensors.

What is Sunoco Standard 110 used for?
Sunoco Standard is used in racing applications including drag racing, oval racing, road course racing, off-road competition, motorcycles, ATVs, karts, boats, snowmobiles, truck and tractor pulling, muscle cars, vintage cars, and selected mild power-adder combinations.

What compression ratio is Sunoco 110 race fuel designed for?
Sunoco Standard is designed for compression ratios up to about 13:1 in conventional small block V8 engines with cast iron cylinder heads. Engines with smaller or more efficient combustion chambers may tolerate higher compression ratios. Compression ratio should not be the only factor used to select a racing fuel.

Can Sunoco 110 race fuel be used with nitrous, turbochargers, or superchargers?
Yes. Sunoco identifies Standard as suitable for mild nitrous, turbocharged, and supercharged applications in addition to naturally aspirated racing engines. More demanding combinations may require a higher-octane or differently formulated racing fuel.

Does Sunoco Standard 110 contain ethanol?
No. Sunoco Standard contains 0% ethanol by volume and is non-oxygenated, with 0% oxygen by weight.

Where can I buy 110 octane fuel?
Sunoco Standard 110 octane race fuel is available for purchase online from Petroleum Service Company. Available sizes, current pricing, shipping information, and bulk discount options are shown on this product page.

Is Sunoco Standard 110 street legal?
No. Sunoco Standard is intended for off-road and racing use rather than normal on-road operation. In California, its use is restricted to qualifying competition racing vehicles.

Do I need to retune my engine when switching to Sunoco 110?
A tuning review is recommended when changing racing fuels. Specific gravity, stoichiometric air/fuel ratio, oxygen content, volatility, and other fuel properties can affect fuel delivery and calibration. Sunoco Standard has a specific gravity of 0.729 and a stoichiometric air/fuel ratio of 14.9.

How long can Sunoco 110 race fuel be stored?
Sunoco states that Standard has a shelf life in excess of 2 years when properly stored in an opaque, tightly sealed container at a stable temperature and protected from unnecessary exposure to air, moisture, and sunlight.