07-05-12, 08:22 PM
Dont want to get too deep here. The colour is not an indication of type, early stuff was generally green/blue when i were a lad. The newer stuff was generally red/orange when it came out, but its only a dye to show up leaks and concentrate, Basically theres 2 types, the earlier inorganic (IAT) and the more recent organic ones (OAT). Look on the label for these initials to determine type. They should not be mixed. Unless you know whats in your system I'd drain it.
