Convenient and easy to use Extremely effective and FAST evaporating Removes old oil & contaminants Compatible with R134a, HFO-1234yf and R12 A/C lubricants No need for a separate flush kit or canister Includes convenient installation hose Requires shop air to effectively blow through and clean components Non-flammable, biodegradable & environmentally friendly Compatible with all PAG, ester and mineral oil. Safe for hybrid vehicles