I've heard some machines backflow through the tranny, the one I used did not. Backflowing crud in the tranny doesn't sound like a great idea to me - especially when you've gone the route I have without changing the filter. The machine used to do mine hooks into one of the tranny lines beween the radiator and tranny. Once hooked up, start the vehicle, and let the tranny push the old fluid through and the machine pushes the new stuff in. Again, it's worked for may, others may disagree!

 

I think I have decided to do it myself the first time. I want to change ALL the fluid, torgue converter included, and replace the filter. I will do all this when it has about 20,000 miles on it. After that I will probably have it done by a machine that replaces the fluid. So who around here know how to drain a torgue converter on the below listed sig? Thanks