17:12. Oil for conditioner compressor lubricant

Oil for lubricant of the compressor of the conditioner circulates in system during the operation of the compressor. When replacing any element of the air conditioning system at considerable leak of coolant add oil that its volume remained at the initial level to system. Oil volume: 140–160 cm3.

Condition of oil

  1. Oil should not contain moisture, dust, metal particles, etc.
  2. Do not mix oil of various types.
  3. Oil moisture content increases if it remains open on air a long time. After oil use the container with oil needs to be closed immediately hermetically.

Return of oil to the compressor

Check the level of oil and during the operation of the engine idling within 20–30 minutes in air conditioning system operating mode with the maximum cooling and the maximum frequency of rotation of the fan, oil has to come back to the compressor.

Check of level and dolivka of oil

Before addition of oil in the conditioner compressor, check compressor oil as follows.


  1. Execute operation of return of oil to the compressor, then discharge the air conditioning system from coolant and remove the compressor from the car.
  1. Merge oil from an output branch pipe of the compressor.

If the compressor cold, perhaps there are difficulties with oil discharge. For discharge of oil heat the compressor to temperature of 40-50 °C.

  1. Measure amount of the flowed-out oil. If oils less than 70 cm3 flowed out, so there is a small leak of oil. Check tightness of connections of the air conditioning system and repair or replace the damaged elements.
  1. Check a condition of oil and fill the compressor with oil in the following order.

a. If oil pure.

The volume of the merged oil
More than 70 cm3 Oil level normal. Add the amount of oil equal to amount of the flowed-out oil.
Less than 70 cm3 Oil level low. Add 70 cm3 of oil.

b. If oil is polluted by metal particles or other materials, before coolant charging in the air conditioning system clear the dryer the receiver.