Bought this 3 years ago, used some, then it literally disappeared. Yesterday I came home and it was sitting in the middle of the floor. Apparently the wife thought it was some medicine thing and put it "away". Would it be any good?
I mixed some PC-HD in Glycol 6 years ago thinking some of the chemicals would last longer in solution, I mixed 5 liters of stock. It is my main developer and is still going strong. It may depend on what kind of container it was stored in and where it has been the last few years, I dunno, but I would sure give it a shot. It is capable of lasting much longer than 3 years.