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 C85 | VP X85 | VP T4 |
|---|---|---|---|
| RON | 106 | 108 | 103.5 |
| MON | 86.5 | 95.2 | 90.5 |
| (R+M)/2 | 96.3 | 101.6 | 97 |
| Specific gravity | 0.7940 (793 kg/m³ at 15 °C) | 0.7800 (779 kg/m³ at 15 °C) | 0.7500 (749 kg/m³ at 15 °C) |
| RVP | 5.98 psi (41.2 kPa) | 4.22 psi (29.1 kPa) | 6.7 psi (46.2 kPa) |
| Oxygen content | 31.97% | 30.03% | 5.92% |
| Fuel type | Ethanol | Ethanol | Unleaded |
| Colour | Yellow | Colorless | Yellow |
| Leaded | No | No | No |
| Oxidation stability | >1440 min | >1440 min | >1440 min |
| Distillation — IBP | 119.8°F (48.8°C) | 140°F (60.0°C) | 104.9°F (40.5°C) |
| Distillation — 10% | 153.9°F (67.7°C) | 163.4°F (73.0°C) | 142.2°F (61.2°C) |
| Distillation — 50% | 167°F (75.0°C) | 170.6°F (77.0°C) | 175.1°F (79.5°C) |
| Distillation — 90% | 171°F (77.2°C) | 172°F (77.8°C) | 223°F (106.1°C) |
| Distillation — FBP | 182.3°F (83.5°C) | 174.7°F (79.3°C) | 266.2°F (130.1°C) |
| H:C ratio | 2.85 | 2.85 | 1.94 |
| O:C ratio | 0.45 | 0.4 | 0.06 |
| Stoichiometric A/F ratio | 9.2 | 9.81 | 13.54 |
Typical values as published by VP Racing Fuels.
You're comparing the maximum of three blends. Remove one to add another.