Slowly discharge A/C system, using approved refrigerant recovery/recycling equipment. Remove A/C compressor. Drain as much compressor oil from suction and discharge ports as possible. Rotate compressor shaft 6-8 revolutions by hand, while pouring oil from ports. Collect oil in a clean container and measure amount drained. DO NOT reuse old refrigerant oil.
If amount drained is 3.0-5.0 ounces, add amount drained plus one ounce of refrigerant oil to replacement compressor. If amount drained is more than 5.0 ounces, add the same amount that was drained from old compressor. If amount drained is less than 3.0 ounces, add 3.0 ounces to compressor. See FORD FS-10 COMPONENT REFRIGERANT OIL CAPACITIES table. Add refrigerant oil to replacement compressor through suction port.
Use new "O" rings on refrigerant lines. Install A/C compressor. Evacuate and charge system. Perform leak test. Ensure A/C system is operating properly.

FORD FS-10 COMPONENT REFRIGERANT OIL CAPACITIES

Component

Ounces

Accumulator/Receiver-Drier

Except Cougar & Focus

⁽¹⁾

Cougar & Focus

⁽²⁾

Condenser

Except Contour & Mystique

⁽³⁾ 1.0

Contour & Mystique

0.7

Evaporator

Except Contour & Mystique

⁽⁴⁾ 3.0

Contour & Mystique

0.7

Other Components ⁽⁵⁾

Except Contour, Cougar, Focus & Mystique

2.0

Refrigerant Lines ⁽⁶⁾

Contour, Cougar, Focus & Mystique

2.0

⁽¹⁾	Drain and measure oil from old accumulator. On Continental, Contour, Escort, Mustang, Mystique, Villager and Windstar, drill two 1/2" holes in bottom of old accumulator, and drain oil. On all models, add the same amount of oil drained plus 2.0 ounces of refrigerant oil to new accumulator.

⁽²⁾	Drain and measure oil from old accumulator. Add the same amount of oil drained plus 3.0 ounces of refrigerant oil to new accumulator.

⁽³⁾	Add NEW refrigerant oil for replacement condenser to inlet side of accumulator or to condenser.

⁽⁴⁾	Add NEW refrigerant oil for replacement evaporator to inlet side of accumulator.

⁽⁵⁾	Add specified amount of NEW refrigerant oil to inlet side of accumulator following replacement/repair of refrigerant line/hose, fixed orifice tube, A/C compressor pressure relief valve, charge port leak, or "O" ring seal leaks.

⁽⁶⁾	If all refrigerant lines have been replaced.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Ford FS-10 10-Cylinder