Replace the drain plug in your 2011-2016 Chevy/GMC 6.6L LML Duramax with new Oil Drain Plugs & Valves. Traditional style thread-in drain plugs can often become damaged, rounded, cracked, or stripped causing oil leaks. In many cases, the drain plugs should be replaced in standard intervals. Find an upgraded oil drain valves for your application that is designed make easy and clean oil changes with less cleanup with just the touch of a lever. Fumoto, Mishimoto, Dorman, and EZ Oil Drain are just some the top brands you'll find.