Why does oil leak out of ac line?

Oil can leak out of the AC line due to a few reasons, primarily related to system pressure imbalances or damaged components. When refrigerant leaks from the system, it can carry oil with it, as the oil is mixed with the refrigerant to lubricate the compressor. Additionally, worn seals, loose connections, or corrosion can create pathways for both refrigerant and oil to escape. Regular maintenance and inspections can help identify and resolve these issues before significant leaks occur.