Oil in AC system

1991 MERCEDES BENZ 560SEL
120,000 MILES
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RONSMERC
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Have replaced AC expansion valve, condenser and receiver/dryer. How much oil should I add when recharging the system? Mercedes Benz specify 7.5 oz as a total for the system.
Dec 12, 2018 at 1:19 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
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Good evening,

I attached a chart below for you to view. the big thing is that it depends on the type and make of your compressor.

The oil in the Freon side is only 20cc. The other oil only goes into the compressor itself. It cannot be added to the Freon system. it has to be added directly to the compressor.

Roy

Fluid Types


Compressor Oils

Pag Oil

Caltex Capella WF 100

Capella WF 100

Shell Clavus 0el G 100

Suniso 5 GS

Ester oil

For Bock/Bitzer air conditioning refrigerant compressors

MB 362.0 compressor oil A 001 989 08 03
Capacities


York A/C compressor, Engine 110

Oil level quantity

Min .................... 180 cc

Normal .................... 240 cc

Max .................... 300 cc

Delco A/C compressor, Engines 116 and 117

Oil level quantity .................... 300 cc

Delco A/C compressor, Engine 617.951

Fresh oil in compressor .................... 170 cc

When replacing compressor, drain oil from old compressor and measure quantity.

If more then 40 cc, replace with same amount from old compressor.

If less then 40 cc, add 90 cc to quantity measured from old compressor to new compressor.

Renew condenser .................... 50 cc

Renew evaporator .................... 70 cc

Renew receiver dehydrator .................... 40 cc

Nippondenso A/C compressor

Initial oil fill .................... 120 cc

Renew compressor, drain old compressor and new compressor, add same quantity to new compressor.

Renew condenser .................... 20 cc

Renew evaporator .................... 40 cc

Renew dryer .................... 10 cc

Vacuum line from evaporator to compressor .................... 10 cc

pressure line from compressor to condenser .................... 10 cc
Dec 12, 2018 at 4:40 PM