I've got 35k on the Titan now and I'm ready to do the transmission oil change. The problem is my dealer wants to charge me $300 to do what they call a full system flush. Does this even sound right? I pretty much laughed in thier faces.Anyways they tell me that the filter in the T cannot be changed and must be flushed. I spoke to about 8 different transmission shops around town and none of them give me the same answer. Some say you can change the filter some say no. What are you guys doing when you change your fluids. I was just going to drop the fluid by using the drain plug on the pan and re-fill whatever I took out. Is this the way to go? and if so, how much fluid do I need to buy. I searched the forums but didn't see any exact numbers.