How to Add Refrigerant Oil to the Car Compressor?

[IanDella]

Methods for adding refrigerant oil to the car air conditioning compressor: 1. Direct Injection Method: Simply pour the refrigerant oil directly into the compressor through the plug opening, which is very convenient. 2. Vacuum Suction Method: (1) Evacuation: Use a dedicated vacuum tool to remove the air inside the air conditioning system. (2) Negative Pressure Suction: After the air inside the air conditioning system is removed, use negative pressure to suck the refrigerant oil into the compressor through a yellow hose. (3) Adding Refrigerant: Once the refrigerant oil is completely sucked into the compressor, the addition of refrigerant oil is complete, and then the refrigerant can be added directly.

[VonValerie]

As an experienced DIY car enthusiast, I've got some insights on adding refrigerant oil to the compressor. The first step is determining whether the AC system needs oil replenishment - typically required after compressor replacement or when leaks are detected. Choosing the correct oil is crucial; consult the manual to select either PAG or POE type refrigerant oil. After cleaning residual oil from the system, locate the compressor's filling port and slowly inject the oil using professional tools - overfilling beyond specifications can damage components. Remember to start the engine and test AC cooling performance after refilling to ensure smooth operation. Last time I did it myself, I added about 30ml which took me an hour or so, saving some money. However, this is a delicate procedure - without proper tools or experience, it's better not to risk it to avoid AC failure or compressor damage.

[DiLucy]

I usually drive very carefully and think adding refrigerant oil is too risky for ordinary people to handle. You must confirm the AC system is low on oil before adding any, such as when there are abnormal noises or decreased cooling performance. But it's easy to make mistakes during the process: adding the wrong oil type (like mixing PAG and mineral oil) or inaccurate oil amounts can destroy the entire compressor. I just drive straight to the repair shop and leave it to the professionals—they have specialized equipment to measure oil levels, clean the pipelines, and inject the precise amount. Beginners should avoid trying this themselves; if you strip a screw or introduce air bubbles, the repair costs will be even higher. The safest approach is to have them check the oil level during regular maintenance. Safe driving is what really matters.

[MacHaley]

When adding refrigerant oil to the car for the first time, I followed simple steps: first turn off the engine, locate the compressor's filling port, usually marked with "Oil". Use a dedicated oil gun syringe to slowly inject the refrigerant oil, ensuring not to exceed the manual's specified range, typically 30-50 milliliters. After adding, start the air conditioning to test if the cooling is normal. If you don't have the tools, buy a disposable kit, which can be done for a few dozen yuan. The job isn't difficult, but be careful to prevent oil leakage or overfilling, which could damage the system.