Have an odd oil filter canister. No markings or name. Its about 9" long and 4" in diameter and the bottom is cone shaped. Two brackets to hold it to the manifold are welded on. There is a tapped hole on the side near the top and one on the bottom of the cone. It has a bolt to hold the lid and the bolt threads into a hollow tube which goes to the bottom and through the bottom tapped hole. I could find no hole in the tube and I have no idea how this one works. I filled it with water through the side hole and nothing came out the bottom. I reversed the process and ran water through the bottom hole and again nothing exited. Anyone know how this thing works?
