I have 48 Packard with an oil bath air cleaner and have some questions. I noticed that when assembled the oil level (marked with a line on the pan) is below the filter element. What I am trying to figure out is how this system cleans the air before going into the carburetor. It seems the air is drawn down toward the oil, then makes a 180 degree turn up through the element. Is that it? Should the element be dipped in oil before assembly to aid in cleaning? Also, what is the proper cleaning and re-oiling procedure for this? <P>Please excuse the questions, but I am new to this type of system and want to make sure I am doing it correctly.