Pay Attention
1. please make sure the installation site is clean. Or, it will cause operating obstruction, even make the temperature of the compressor very high, and the belt on the clutch may melt.
2. The item will with oil when sent to you, so there is no need to add oil when you use it at the first time.
But you need to add the refrigerant , please add them to 70-80%, don't need to fill up. There may be noise if the refrigerant is added too much.
Compatibility
Universal red band Valve Stem Cores that fit most rubber or aluminum valve stems or valve stems off of any Tire Pressure Monitoring Sensor