Oil Drain Plug

[zmanH2]

Does the oil drain plug/bolt have a washer? I have the 2006 model w/ only 20k miles. Recently, I noticed very minimal drops of oil on the garage floor coming from the plug. When I changed the oil, I noticed there was no washer there so I used a little teflon tape on the thread of the plug. After a couple of weeks, the leak is back again. The leak is very minimal at about one small drop every five days.