In as little as 5 minutes, Cool Car A/C Performance Booster from Groove Tech Filters uses a proprietary thermo-conductive formula to improve A/C performance. After being added to the A/C system via a special tool, users should notice average vent temperature drop by 12.1 degrees F (with one field test recording 29 degrees F), as well as faster cooling and reduced cabin humidity. Maintenance benefits include resolving oil fouling and reducing compressor friction and wear. The treatment, designed for quick lube and auto repair shops, does not require additional refrigerant and lasts the life of the compressor.