This refrigerant product is designed for use in R-134a mobile air-conditioning (A/C) systems and offers a consistently high-quality proprietary blend of hydrocarbon refrigerant. It also contains A/C Oil Chill to lubricate the system and can be installed using a hose. Kits include hoses for installation, but it is important to correctly identify your system type (either R-134a or R-1234yf) before purchasing. Additionally, knowing your system's original OEM refrigerant charge volume can help estimate the equivalent charge for R-134a systems (only install about 38% of the original charge). DIRECTIONS FOR USE: NOTE: Before charging, it is essential to check and repair all leaks! Use gauges and hoses with the compressor off, then invert the can and install the product on the low-pressure side. After minimum charge, test the system for leaks and add more product as needed to achieve correct pressure. This product is flammable and should be leak tested