Im getting ready to change the transmission fluid i have 16 quarts being shipped to me from amsoil. I have a 04 4r70w tranny, I am going to drop the pan and change the filter and I read that some people removed the return line from the cooler and placed a clear tube over the line into a bucked. and started the engine and let it idle until a air bubble came out and shut the motor off and topped the tranny off and repeated until the fluid was changed. One question i had was how much flow does the return line have. I dont want any supprises when i do this. Amsoil recomended adding fluid as fast as it was pumped out by the motor. does anybody have any recomendations for how to do this? Thanks

 

done this to mine-run till return line is dry[pan empty]fill up with 4 1/2 qts fluid repeat till capacity is swapped out,when it come s empty, one of those times is when you want to change filter-simple and easy-phil

 

There is an exact procedure here somewhere, posted by Mark Kovalsky. It was written for a 4R100 but the procedure is essentially the same for 4R70W/4R75E, it just holds a different amount of fluid.

 

thank you i was wondering how fast does the fluid come out of the hose i was currious about how much time i would have before it pumped the pan dry

 

Here it is:

http://www.ford-trucks.com/article/i...nsmission.html

 

doesn't come out rediculously fast, took about 1-1-1/2 minutes to run dry,i had wife in vehicle to shut off when this time comes,i used a 2 1/2 gallon bucket to catch fluid,much deeper than oil dain pan-phil

 

hey thanks that was what i was wanting to know.

 

Other than capacity, I assume its the same for the 4R75-E (which this site shows is in my 07 fx4...correct?)

edit; nevermind. yes, it is the same..

thanks, great writeup!
Matt

 

I got my fluid changed today used the return line on the transmission no major problems this was easier than i thought thanks for the help