I love the Fumoto, and it has made oil changes on my Elantra almost silly easy. The only problem is, if I'm not around to change the oil and my wife takes it in to get an oil change done, most shops act like we've put some secret lock on the oil pan. Last time my wife took it in, I noticed that instead of opening the valve to drain the oil, they just removed the valve entirely and then screwed it back in. I could tell because I was meticulous about orientating it when I installed it, and they just put it in randomly so that the valve was off to the side.