A Must Have Tool: Many air-conditioning compressor failures are caused by low oil levels and dirty oil in the air-conditioning system. Using this low-cost oil checker can save you the cost of a new compressor and the downtime caused by replacing the compressor.
Main Purpose: This AC oil checker is used to detect the oil level of air conditioner and harmful acids in the oil of air conditioner system without changing the air conditioner system and draining all the oil in the system.
Including 9pcs oil check one pack, which is very affordable and can help you solve your problems. It is worth having