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 MS109 REG | VP X85 |
|---|---|---|
| RON | 111 | 108 |
| MON | 100 | 95.2 |
| (R+M)/2 | 105.5 | 101.6 |
| Specific gravity | 0.7200 (719 kg/m³ at 15 °C) | 0.7800 (779 kg/m³ at 15 °C) |
| RVP | 6.03 psi (41.6 kPa) | 4.22 psi (29.1 kPa) |
| Oxygen content | 9.32% | 30.03% |
| Fuel type | Unleaded | Ethanol |
| Colour | Colorless | Colorless |
| Leaded | No | No |
| Oxidation stability | >1440 min | >1440 min |
| Distillation — IBP | 97.7°F (36.5°C) | 140°F (60.0°C) |
| Distillation — 10% | 138.6°F (59.2°C) | 163.4°F (73.0°C) |
| Distillation — 50% | 159.6°F (70.9°C) | 170.6°F (77.0°C) |
| Distillation — 90% | 216.1°F (102.3°C) | 172°F (77.8°C) |
| Distillation — FBP | 226.6°F (108.1°C) | 174.7°F (79.3°C) |
| H:C ratio | 2.32 | 2.85 |
| O:C ratio | 0.09 | 0.4 |
| Stoichiometric A/F ratio | 13.36 | 9.81 |
Typical values as published by VP Racing Fuels.