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 C50+ REG | VP R5.1 |
|---|---|---|---|
| RON | 108 | 102 | 102 |
| MON | 95.2 | 87.5 | 86.3 |
| (R+M)/2 | 101.6 | 94.8 | 94.3 |
| Specific gravity | 0.7800 (779 kg/m³ at 15 °C) | 0.7160 (715 kg/m³ at 15 °C) | 0.7818 (781 kg/m³ at 15 °C) |
| RVP | 4.22 psi (29.1 kPa) | 10.33 psi (71.2 kPa) | 7.28 psi (50.2 kPa) |
| Oxygen content | 30.03% | 6.69% | 3.68% |
| Fuel type | Ethanol | Unleaded | Unleaded |
| Colour | Colorless | — | Colorless |
| Leaded | No | No | No |
| Oxidation stability | >1440 min | — | >1440 min |
| Distillation — IBP | 140°F (60.0°C) | — | 113.2°F (45.1°C) |
| Distillation — 10% | 163.4°F (73.0°C) | — | 129°F (53.9°C) |
| Distillation — 50% | 170.6°F (77.0°C) | — | 200.3°F (93.5°C) |
| Distillation — 90% | 172°F (77.8°C) | — | 242.4°F (116.9°C) |
| Distillation — FBP | 174.7°F (79.3°C) | — | 281.7°F (138.7°C) |
| H:C ratio | 2.85 | — | 1.74 |
| O:C ratio | 0.4 | — | 0.03 |
| Stoichiometric A/F ratio | 9.81 | — | 13.69 |
Typical values as published by VP Racing Fuels.
You're comparing the maximum of three blends. Remove one to add another.