Addition of lubricating oil: Notes
Oils should not be mixed. Always use the correct type of compressor oil.
Too much lubricating oil will impair cooling. Too little lubricating oil will damage the compressor.
When repairing leaks, or when a component is replaced, lubricating oil must be added. The amount of oil for each component depends on whether the leak happened slowly or quickly.
Slow leak (more than 24 hours)
There is not normally a great risk of oil loss with a slow leak.
The following procedures apply when replacing the components:
Fast leak (hose burst for example)
A fast leak often means that lubricating oil is drawn out with the coolant.
Compressor
Preparatory stage for oil change
- Measure the volume of oil drained from the compressor
- Replace the drained oil volume according to the table below:
| Drained oil volume | Reusing the compressor | New compressor |
| More than 60% of the total oil volume | Replace the drained oil volume with the equivalent volume | 180cm 3 - (drained oil volume + 20cm 3) |
| Less than 60% of the total oil volume | Fill up 60% of the total oil volume of the system | Fill up 180cm 3 * 40% - 20cm 3 |
When installing a completely new system:
Check that there is oil in the compressor. The other components should contain no oil.