Division 2.5 Test fuels
United Kingdom
The test fuel used for exhaust emission testing shall meet the following characteristics:
| Petrol Fuels | ||||
|---|---|---|---|---|
| Property | RF-02-99Unleaded | RF-02-03Unleaded | ||
| min | max | min | max | |
| Research Octane Number (RON) | 95 | — | 95 | — |
| Motor Octane Number (MON) | 85 | — | 85 | — |
| Density at 15 oC (kg/m3) | 748 | 762 | 740 | 754 |
| Initial boiling point (°C) | 24 | 40 | 24 | 40 |
| Mass fraction of sulphur (mg/kg) | — | 100 | — | 10 |
| Lead content (mg/l) | — | 5 | — | 5 |
| Reid vapour pressure (kPa) | 56 | 60 | — | — |
| Vapour pressure (DVPE) (kPa) | — | — | 56 | 60 |
| Diesel Fuels | ||||
| Property | RF-06-99 | RF-06-03 | ||
| min | max | min | max | |
| Cetane number | 52 | 54 | 52 | 54 |
| Density at 15 oC (kg/m3) | 833 | 837 | 833 | 837 |
| Final boiling point (°C) | — | 370 | — | 370 |
| Flash point (°C) | 55 | — | 55 | — |
| Mass fraction of sulphur (mg/kg) | To be reported | 300 (50) | — | 10 |
| Mass fraction of ash (%) | To be reported | 0,01 | — | 0,01 |
Notified bodies may accept tests carried out on the basis of other tests fuel as specified in a harmonised standard.