Check the listing for details. Envirosafe Arctic Air for R22, Oil Charge, Support AC. Condition: New. Listed at 39.99 USD. ARCTIC AIR:An AC booster Drying agentColder airLonger lifeA/C boosterThis product is a combination of 2 Enviro-Safe products mixed into 1 to promote maximum cooling performance.It will remove moisture from the AC system.As most people know, moisture = corrosion and corrosion lead to leaks. Nobody wants leaks in their AC system!This product also will reduce friction in system and provide colder air duct temps in most cases.OIL CHARGE A blend of selected oils that have been formulated to provide the extra oil needed when an air conditioning unit loses the oil charge due to leaks or malfunctions in the system.Use only with mineral, ester or pag oilsCheck to see if you need more oil in you system - oil checkers available on our website. They are part #: 5025a and 5030a.DO NOT use in ammonia systems.DO NOT use in CO2 systems.Gas propelledInstalls the same way as refrigerant.Cannot be added to a fully charged system.