I was going to drain and replace the oil/grease in my swivel housings as preventative maintenance, but I've found I don't have a drain plug in mine. I've searched the forum and gather that the only way to drain the old stuff is to strip everything down. I don't really want to do that if there's nothing wrong with them, so is there any way I can check the levels, or is it just a matter of waiting until something fails?
