Compare VP race fuels side by side
Pick two or three blends below to see their published specs side by side — the same figures, in the same units, as each blend's own page.
| Spec | VP X85 | VP X98 | VP C9 |
|---|---|---|---|
| RON | 108 | 103 | 98.5 |
| MON | 95.2 | 120 | 95 |
| (R+M)/2 | 101.6 | >111.5 | 96.8 |
| Specific gravity | 0.7800 (779 kg/m³ at 15 °C) | 0.7940 (793 kg/m³ at 15 °C) | 0.7225 (722 kg/m³ at 15 °C) |
| RVP | 4.22 psi (29.1 kPa) | 3.04 psi (21.0 kPa) | 6.89 psi (47.5 kPa) |
| Oxygen content | 30.03% | 34.73% | 0% |
| Fuel type | Ethanol | Ethanol | Unleaded |
| Colour | Colorless | Colorless | Red |
| Leaded | No | No | No |
| Oxidation stability | >1440 min | >1440 min | >1440 min |
| Distillation — IBP | 140°F (60.0°C) | 151°F (66.1°C) | 91.8°F (33.2°C) |
| Distillation — 10% | 163.4°F (73.0°C) | 170.1°F (76.7°C) | 140°F (60.0°C) |
| Distillation — 50% | 170.6°F (77.0°C) | 171.3°F (77.4°C) | 217°F (102.8°C) |
| Distillation — 90% | 172°F (77.8°C) | 171.7°F (77.6°C) | 248.4°F (120.2°C) |
| Distillation — FBP | 174.7°F (79.3°C) | 178.2°F (81.2°C) | 376°F (191.1°C) |
| H:C ratio | 2.85 | 3 | 1.99 |
| O:C ratio | 0.4 | 0.5 | 0 |
| Stoichiometric A/F ratio | 9.81 | 8.98 | 14.73 |
Typical values as published by VP Racing Fuels.
You're comparing the maximum of three blends. Remove one to add another.