How To Check Oil Level In Your Car A/C Compressor


In a domestic air conditioner or one for a car, an A/C compressor is essential.

To ensure optimal functioning, it is essential to frequently examine and maintain it. When utilizing the oil-injected models, one of the most important things to check is the oil level.

The pistons and all other moving elements of the A/C compressor must be kept well maintained with oil to prevent seizing.

Follow the straightforward instructions below to check the oil level in your A/C compressor, whether or not you see the warning indicators mentioned as well.

Common Symptoms Your A/C Compressor Needs Oil

Excessive wear on the rods and bearings is one of the most typical indications that you need to add oil to your A/C compressor.

Usually, it happens when the crankshaft does not receive enough oil to keep the moving parts sufficiently lubricated, which causes excessive wear.

Your A/C system has weak places if you find that refrigerant is dripping from it. These openings are also areas where oil can leak out.

Black smoke coming from your A/C compressor is a surefire indication that the system’s oil supply is low.

Since there is no oil to cool things down, the black smoke is produced by friction between the moving parts or burning components.

Locate and Remove A/C Compressor

This technique, which involves taking the A/C compressor out of the air conditioning system, is probably what most people employ. Although it takes longer and is more labor-intensive, this approach is the most successful one.

If you are familiar with the type you have and how it looks, this should be simple, although most are easy to identify because of their cylinders. Once you’ve found it, you should remove it by unscrewing or unbolting it.

Drain the Oil

The oil in the A/C compressor must then be completely drained into a measuring container. If there are any openings on the compressor, make sure to only drain the oil from the drain valve.

Compare the Oil with Recommended Quantity

You must contrast it with the manufacturer’s recommendations after draining all the oil into the measuring container.

This information should be available in the user handbook. You may also find out the precise quantity of oil required by a given A/C compressor by conducting a simple online search.

Your A/C compressor needs more oil if the amount you have in the measuring container is less than what the manufacturer advises.

Before putting the air compressor back into the system, you should add the necessary amount of fresh, clean oil to make up the difference in the oil level or even top it off.


Enough lubrication is necessary to keep an A/C compressor operating smoothly. Oil ensures that components, such as the piston, move as they should and do not overheat, as this can result in a variety of problems.

You can identify problems with the oil in your A/C compressors by a number of indicators, including a burning oil odor and excessive bearing wear.

Additionally, you can check the oil level in the A/C compressor by removing it. No matter which method you use to monitor the oil level, the most important thing is to make sure there is always enough.