Try filtering it and examine it to see if there are other things in it, the oxy should go into solution but the others might not. Swallow the solution and make sure it still had the shit it, and then if it seems to not have a lot of crap in it like before, you MIGHT try a small injection, as you say youve injected thousands of the whole pills, and the ratio seems to be pretty high im guessing a filtered solution would be much cleaner than the 1000 whole pills youve done so far, did you notice any reactions or abnormalities when you shot the pills? if not it may be safe enough although im gonna have to still reccomend you dont try shooting pills especially oxycontin or time release shit, theres so much other shit that you dont want to fuck with. Dilaudid is probably dextrose and other normally present substances in your blood, they use dextrose in injections as well. Thats probably why Knoll's are safe but the others arent, they probably have talc or chalk or something in them.
Peace
------------------
"As your attorney i advise you to rent a very fast car with no top, and you'll need the cocaine."
My AIM: Thetripdoctor (im always on, Trust me)