The Problem with Leaks An obvious problem with a leaking closer is the potential hazard it presents to those entering and exiting a doorway. The oil inside the closer drips down and can make floors extremely slick. This is because leaks typically occur in two forms: o-ring malfunction or cylinder cracks.Click to see full answer. Likewise, how do I fix a leaking oil door closer? Door Closer is Leaking Oil Leaking oil can cause the door closer to seize in place. To fix this, remove the adjusting screw. Then, use the rust remover to clean the screw and replace the O-ring. Make sure to lubricate before replacing the adjusting screw.Also Know, how do I fix my door closer? Remember, when it comes to turning door closer adjustment screws, a little goes a long way. Start with no more than 1/8 of a turn. Turn the adjustment screw clockwise to slow the door closer down, counter-clockwise to speed it up, then get down off the ladder and observe the effect. Open the door and watch it close. Moreover, what kind of oil goes in a door closer? Hydraulic Jack oil is usually the right stuff.How do you lubricate a door closer?Hinges and door closers should get a few drops of penetrating oil at the top so it runs down into the wearing surface between the pin and the housing. Lock mechanisms that need lubricant should get a shot of dry graphite from a spout-type bottle.