Smart Clip® Technology – Easy to Use Vent Clips change to blue and green to show correct refrigerant charge and to prevent overcharging. Learn more NEW Digital Pressure Gauge – Recharge by temperature and pressure: the safe and accurate way. Easy-to-read and reusable with any R-134a refrigerant can. NEW Hybrid-Safe Formula – Works with R-134a hybrid-vehicle systems. A/C Avalanche Proprietary refrigerant formula replaces lost refrigerant and oil. The formula improves the a/c’s cooling capabilities and provides better heat exchange by forming a protective film to decrease friction, reduce engine drag, prevent oxidation and sludge formation and extend the compressor life. Stop Leaks – System safe chemical additive stops leaks in o-rings and other rubber components where most common leaks begin. Re-Useable Recharge Hose