pawjr74 wrote:There are different ways of replacing the trans fluid. You do want to avoid some types of "flush" machines. From my research I found out that you want to go somewhere that does a fluid exchange. They tap into you trans cooler lines and the machine basically adds new fluid in one line while the other line drains the old fluid out. You ONLY want to use your vehicles internal transmission oil pump to move the fluid in the normal direction of flow. You don't want a machine that puts in any "flush" chemicals or pushes fluid the opposite direction of the normal flow. I did mine at 40K and I'm now at 65k with no problems.
In my opinion a drain and fill is not accomplishing much due to the above stated fact.Shinyboy wrote: He went on to say that if I did a simple drain and refill, I would only be changing out 4 of the 13 quart capacity.