I'm doing my first oil change. I watched some videos and read forum posts. Couldn't find much specific to Tige but found some with same engine. I saw a few people saying they can only get 7 qts to come out and I was having the same issue until I just noticed that the old drain tube was going back up above the exit point and was zip tied to another hose. Once I cut that and made sure all of the hose was lower than the exit point on the pan the rest drained out. Also the oil doesn't seem to come out on its own at first. I use an old soap bottle cap pump and stick the hose in the drain hose and pump it until oil comes out. Worked great.