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 C12 | VP MS109 REG |
|---|---|---|---|
| RON | 108 | 116 | 111 |
| MON | 95.2 | 108 | 100 |
| (R+M)/2 | 101.6 | 112 | 105.5 |
| Specific gravity | 0.7800 (779 kg/m³ at 15 °C) | 0.7175 (717 kg/m³ at 15 °C) | 0.7200 (719 kg/m³ at 15 °C) |
| RVP | 4.22 psi (29.1 kPa) | 7.92 psi (54.6 kPa) | 6.03 psi (41.6 kPa) |
| Oxygen content | 30.03% | 0% | 9.32% |
| Fuel type | Ethanol | Leaded | Unleaded |
| Colour | Colorless | Green | Colorless |
| Leaded | No | Yes | No |
| Oxidation stability | >1440 min | >1440 min | >1440 min |
| Distillation — IBP | 140°F (60.0°C) | 93.6°F (34.2°C) | 97.7°F (36.5°C) |
| Distillation — 10% | 163.4°F (73.0°C) | 133.9°F (56.6°C) | 138.6°F (59.2°C) |
| Distillation — 50% | 170.6°F (77.0°C) | 215.2°F (101.8°C) | 159.6°F (70.9°C) |
| Distillation — 90% | 172°F (77.8°C) | 249.8°F (121.0°C) | 216.1°F (102.3°C) |
| Distillation — FBP | 174.7°F (79.3°C) | 397.6°F (203.1°C) | 226.6°F (108.1°C) |
| H:C ratio | 2.85 | 2.03 | 2.32 |
| O:C ratio | 0.4 | 0 | 0.09 |
| Stoichiometric A/F ratio | 9.81 | 14.79 | 13.36 |
Typical values as published by VP Racing Fuels.
You're comparing the maximum of three blends. Remove one to add another.