Again, I say amen. This is exactly what my dealership performs (A Ford dealership).

I don't know where that other lengthy post (above) came from, but the article switched back and forth from engine to transmission flushing, confusing the average reader with little mechanical knowledge...I certainly would not pass that on to a "novice" and ask them if they understand.

All of us agree that a "reverse flush" is not the way to go, and reputable transmission shops as well as dealer repair shops will not go this route.

I'd be running fast away if they did.

Now, can we bring back the old issue of dyno verses synthetic oils, and what's the best filter to use?

 

Well if K&N would make a tranny filter and Mobil 1 made our tranny fluid we would never have to flush or replace.

 

flush it...but get it done at the sealer cause they use the proper equipment

 

Oh lord. That article made perfect sense to me, and I'm not the most knowledgeable about the auto trans.

Guess I'll simply have to speak with the head service tech/manager (not my service advisor, guy is clueless on equipment used) to see what they actually use. Being it's the dealer, and other Ford dealers use the proper equipment, I'd hope theirs wasn't a reverse flush system. But you never know.

Thanks for all the input guys. Keep the suggestions and opinions coming. Always like to get other drivers/owners feedback.

 

So draining the pan and the torque converter and adding fluid would be back flushing? Its what i always did and my trans went for 350000 hard miles. I guess i dont know that much but i figured i would have gotten around %90 of the old fluid. Just whats left in the cooler and lines. I was not trying to give bad advice just advice that ive used and thats worked for me.

 

I never said "draining the pan and the torque converter and adding fluid would be backflushing". Don't know how you came up with that. I never brought up the conversation of backflushing, nor did I describe what it was. I did however say that "reputable dealers and transmission shops do not do this method of flushing, and that I'd run away (fast) if they suggested that to me".

I should add, you cannot drain the torque converter on our trucks, nor any modern vehicle that I'm aware of these days; the auto manufacturers removed the drain plug from torque converters, hence the reason for having to use flush devices. If there were a plug, we would not need to continue with this post, as flushing would not be required.

Now, if you are removing the torque converter from the flexplate to to drain it....

 

Back flushing is taking 2 tranny fluid lines hooking them to a machine and forcing the fluid backwards thru the transmission. This is bad!

However hooking up to a Wynns machine as shown in the link above is the proper way to flush. The machine is idiot proof as it will not provide enough pressure to push fluid thru backwards. It will automatically change the direction of flow so the fluid flows thru properly and withput damage. Basically the guy in Bucko's profile pic could do it without f'n it up

 

Yep...even a caveman can do it.

 

If you would rather drain than flush...just do so more frequently to keep diluting out the older fluid.

 

just spoke to the head mech. at my local dealership. my f150 has 110k on the odo and asked about a trans. service. he stated what ever i do do not flush, and do not change the filter. that unless i want transmission problems. since i bought this truck used with 109k and do not know the history "leave it as is" and wait until it starts to have problems do not create them by changing the fluid and filter. seemed pretty honest about it, but damn how delicate are these trannies? seems a little wrong leaving that oil and filter in their. but since i do not have any problems i will leave alone.