I purchased a can of APP 2"F" powder recently that I was thinking of using in my inline. I also have 3/4 of a can of ClearShot that is 3 or so years old. I used it last year, and had good luck. I bought the APP because I was concerned about the age of the ClearShot. What are the pro's and con's of each? What would you suggest? Thanks for your input!