[Chevy3+3]

Well I drained out my trans oil which didn't look fantastic. It was darker in color. When I put the transmission in I filled the oil until it ran out the fill plug. I drained almost 4 qts from it today. I started adding oil through the fill plug on flat ground and only managed to get about 3.75 qts into it before it ran our the fill plug hole. I added an extra quart through the shift tower and got it out on the road. The shifting is smoother and it did quiet the trans down some. Now I can't get 5th gear to make any noise. Only sounds from the trans now I would consider normal.