Sorry: But what i am looking for is the max amount of freon r-12 this system holds. Is it 2.2 or 2.9, i just injected 1oz. of uv dye into the system and if i need to recover,take apart to repair and recharge an empty system, i would like to know how many 12oz. cans of r-12 to buy.If it is 2.2 i may only need 2 cans. The sticker says:klimaanlage fur autimobile 1.0kg 2.2lbs also: Daimler benz ag 1.3 2.9.