Nobody but nobody uses oil bath air cleaners anymore. Just look at the front of a giant mining dump truck and you'll see several dry air cleaners in a row. The best way you can service your oil bath air cleaners is to replace them with a dry air cleaner. None of this servicing stuff, just replace the paper element every so often when needed. But-yoouz chooze yoouz wayz of doin stuff. Good Luck, TomC