Where do you add oil to car AC compressor?

Answered by Jarrod Smith

To add oil to a car AC compressor, you will need to locate the oil fill valve on the rear of the compressor. This valve is typically a small screw or cap, which can be unscrewed to access the oil reservoir.

Before adding new oil, it is important to drain the old oil from the compressor. To do this, you can unscrew the drain valve, usually located near the oil fill valve, to allow the old oil to flow out. It is recommended to have a container ready to catch the old oil as it drains.

Once the old oil has drained completely, you can proceed to add new oil to the compressor. The amount of oil required can vary depending on the specific compressor and vehicle, so it is best to consult your owner’s manual or a repair guide for the correct amount. Typically, compressor oil is measured in ounces or milliliters.

When adding oil, it is important to use the correct type and viscosity recommended by the manufacturer. Different compressors may require different types of oil, such as PAG (Polyalkylene Glycol) or PAO (Polyalphaolefin) oil. Consult your owner’s manual or a trusted mechanic to ensure you are using the right oil for your compressor.

To add the new oil, you can use a funnel or a specialized oil dispenser, making sure to pour it slowly and avoid spills. It is recommended to add the oil in small increments, checking the oil level periodically to avoid overfilling. Overfilling can lead to poor compressor performance or damage.

After adding the new oil, it is a good practice to recheck the oil level using the dipstick or sight glass, if your compressor has one. The oil level should be within the recommended range indicated by the manufacturer. If necessary, you can add more oil in small increments until the correct level is reached.

Remember to securely seal the oil fill and drain valves once you have finished adding oil. This will prevent any leaks and ensure the proper functioning of the compressor.

In summary, to add oil to a car AC compressor, locate the oil fill valve on the rear of the compressor, unscrew it to drain the old oil, and add the recommended amount of new oil using a funnel or dispenser. Consult your owner’s manual for specific instructions and use the correct type and viscosity of oil. Recheck the oil level and seal the valves securely.