This product is a combination of 2 Enviro-Safe products into 1 for maximum cooling performance.  This will remove moisture in the A/C system.  Moisture can cause corrosion in the A/C system or the A/C to freeze up.
The other part of the product will reduce friction in system and provide colder air duct temps in most cases.
Compatible with any automotive refrigerant except ammonia and CO2
Drying agent
Colder air
Longer life
A/C Booster
DO NOT use in ammonia systems
DO NOT use in CO2 systems
Note: This item has a 134a top!
Gas propelled
Installs the same way as refrigerant
Cannot be added to a fully charged system