Home 2010 Acura TL SEDAN AT Torque Converter Case (5AT) ... Oil Pump ; Plug Hole Coil - Plug ... DRAIN PLUG (18MM) 17. $2.50. WASHER, DRAIN PLUG (18MM) ... 20PCS 94109-14000 14mm Oil Drain Plug Crush Washer Gaskets For Honda Acura. C $6.86. Free shipping Dec 08, 2017 · Your engine needs oil to run. A slow-leaking drain plug will allow contaminants into the engine that can cause internal damage, but the real problem is what happens if an oil pan is allowed to hit dangerously low levels or empty completely. Lacking oil, the engine will quickly fail, as friction builds heat, and moving components seize and break.