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 MS109 REG | VP X85R |
|---|---|---|---|
| RON | 108 | 111 | 106 |
| MON | 95.2 | 100 | 90.7 |
| (R+M)/2 | 101.6 | 105.5 | 98.3 |
| Specific gravity | 0.7800 (779 kg/m³ at 15 °C) | 0.7200 (719 kg/m³ at 15 °C) | 0.8000 (799 kg/m³ at 15 °C) |
| RVP | 4.22 psi (29.1 kPa) | 6.03 psi (41.6 kPa) | 3.2 psi (22.1 kPa) |
| Oxygen content | 30.03% | 9.32% | 32.31% |
| Fuel type | Ethanol | Unleaded | Ethanol |
| Colour | Colorless | Colorless | Colorless |
| Leaded | No | No | — |
| Oxidation stability | >1440 min | >1440 min | — |
| Distillation — IBP | 140°F (60.0°C) | 97.7°F (36.5°C) | — |
| Distillation — 10% | 163.4°F (73.0°C) | 138.6°F (59.2°C) | — |
| Distillation — 50% | 170.6°F (77.0°C) | 159.6°F (70.9°C) | — |
| Distillation — 90% | 172°F (77.8°C) | 216.1°F (102.3°C) | — |
| Distillation — FBP | 174.7°F (79.3°C) | 226.6°F (108.1°C) | — |
| H:C ratio | 2.85 | 2.32 | — |
| O:C ratio | 0.4 | 0.09 | — |
| Stoichiometric A/F ratio | 9.81 | 13.36 | — |
Typical values as published by VP Racing Fuels.
You're comparing the maximum of three blends. Remove one to add another.