From time to time on ebay, a "sludge sucker" shows up for sale. This gadget is hand-held and is a hand-operated vacuum pump that sucks the sludge out of the old filter canisters. They were a Fram dealer item to help with clean-out during a filter change. I have one of these and they work. I may have a picture at home (the sucker itself is with the K-F parts and stuff in the basement of the KY house).
