VP Racing Fuels, Inc.
VP Racing C20 Race Fuel
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VP Racing C20 is an unleaded, non-oxygenated race fuel formulated for boosted and naturally aspirated performance engines. An evolution of VP Racing C10, C20 is designed to deliver increased power and torque while providing dependable detonation protection for high-output engine combinations.
C20 can support up to 30 psi of boost and naturally aspirated engines with compression ratios up to 12:1. Its 0% oxygen content provides predictable fuel chemistry for consistent tuning without the calibration changes required by oxygenated fuels.
C20 also has a higher Reid vapor pressure than C10, supporting improved vaporization in naturally aspirated applications. This makes it a strong option for racers who need unleaded, non-oxygenated fuel with capability for both boosted and naturally aspirated combinations.
C20 is colorless and available in 5-gallon pails and 54-gallon drums. It is intended for off-road and competition use where permitted.
Features and benefits
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Unleaded, non-oxygenated race fuel
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Formulated as an improvement on VP Racing C10
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Designed to increase power and torque over C10
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Supports boosted engines running up to 30 psi of boost
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Suitable for naturally aspirated engines with compression ratios up to 12:1
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Higher vapor pressure supports fuel vaporization in naturally aspirated engines
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0% oxygen content for predictable tuning
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Colorless formulation for easy fuel-system inspection
Typical values
| Specification | Value |
|---|---|
| Color | Colorless |
| Specific gravity | 0.8175 |
| Motor Octane Number | 90 |
| Research Octane Number | 105 |
| (R+M)/2 octane rating | 97.5 |
| Oxygen content | 0% |
| Oxidation stability | 1,440+ minutes |
| Leaded or unleaded | Unleaded |
| Reid vapor pressure | 4.8 psi |
| Initial boiling point | 125.6°F |
| 10% distillation | 157.9°F |
| 50% distillation | 216.2°F |
| 90% distillation | 228.3°F |
| Final boiling point | 229.3°F |
| H:C ratio | 1.43 |
| O:C ratio | 0 |
| Stoichiometric air-fuel ratio | 13.91 |
Frequently asked questions
What is VP Racing C20 fuel?
VP C20 is an unleaded, non-oxygenated race fuel for boosted and naturally aspirated performance engines. It is an evolution of VP Racing C10 that is formulated to deliver increased power and torque.
How much boost can VP C20 support?
VP C20 can support engine combinations running up to 30 psi of boost. Fuel selection should always account for the complete engine combination, including boost level, ignition timing, air temperature, cylinder-head design, and tuner recommendations.
What compression ratio is C20 designed for?
For naturally aspirated engines, VP C20 is recommended for compression ratios up to 12:1.
Is VP C20 oxygenated?
No. C20 contains 0% oxygen. Its non-oxygenated formulation helps provide predictable combustion characteristics and consistent tuning.
Is VP C20 leaded?
No. VP C20 is an unleaded race fuel. Confirm that it meets the requirements of your engine, fuel system, and racing class before use.
How is C20 different from VP C10?
C20 is an improved version of VP Racing C10. It is formulated to provide increased power and torque, support up to 30 psi of boost, and offer a higher vapor pressure for improved vaporization in naturally aspirated engines.
Why does vapor pressure matter in a race fuel?
Vapor pressure affects how readily a fuel vaporizes. C20's higher vapor pressure can support improved vaporization in naturally aspirated engines, helping create a more consistent air-fuel mixture under appropriate operating conditions.
What is the octane rating of VP C20?
VP C20 has a 90 MON, 105 RON, and 97.5 (R+M)/2 octane rating. Octane numbers should be considered alongside boost, compression ratio, and the complete engine setup when choosing fuel.
Is VP C20 street legal?
C20 is a race fuel intended for off-road and competition use where permitted. Follow all applicable emissions laws, fuel regulations, and racing-series rules.