What about a tranny flush using a drill pump.
I been reading on this thread of 2 days now. I plan on doing an ATF flush on a 2004 XC70 I just purchased.
I like GIBBON's method, and I plan to follow it, but I have a question:
Why not use a pump to suck out all the fluid, and then use the same pump to replace it with clean ATF?
Follow me here:
Disconnect the ATF cooler return line as in gibbons method except that now you attach a drill pump (you can buy one from Home Depot for like 10$) to the tubing described and suck out all the fluid you can. Then Start the engine, and run it for say 20 sec just enough to give the pump in the transmission enough time to empty itself and other pipes or cavities there may be. Now pump out the rest of the fluid as before.
Once you are satisfied you pumped out as much of the fluid as possible (should be close to the capacity, if it is less, then you know there is more dirty ATF trapped in there somewhere) you can start refilling with clean ATF!
Instead of slowly and burping and overflowing and stuff, just reverse the pump and pump clean ATF into the tranny from the bottom up, allowing the air to escape through the dipstick hole. Clean and easy.
Now I imagine you would have to stop say ¾ of the way through this to start the engine and allow the pump in the tranny to re-fill itself and other cavities and passageways in the tranny. Stop the engine and finish pumping the new fluid in until you have replaced all the oil you have removed.
Reconnect the hose back the way it was, wash the pump and tubing with gasoline or something like that and you are done. No mess, no oil spills and no wasted ATF.
Sounds good right?? Sure it does, but DOES IT WORK? What do you all think?