Changing ATF
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Freshman User
Joined: Jan 2002
Posts: 34
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Changing ATF
I want to change the ATF in my 90 AOD, all of itm, not just what's in the pan. I've heard of shops using a setup where they hook up a tank of new oil to a line on the tranny somewhere, and unhook the cooler line from the radiator to **** out all the old oil. Anybody know the specifics to this operation?
ChopsMcgraw
ChopsMcgraw
Senior User
Joined: Feb 2000
Posts: 482
Likes: 1
From: Connecticut
Changing ATF
There may be a drain plug on the converter. Remove the inspection cover from the bottom of the bell housing and look for it. This allows draining of all the fluid. Disconnect the cooler and let it drain as well.
Mark
Mark
New User
Joined: May 2002
Posts: 13
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From: Antioch USA
Changing ATF
My brother in law had it done on his truck, said it made a world of difference . While your at it pay the extra bucks and do synthetic. I think they do the procedure while the engine is running to pump out all the old fluid.While the fluid is pumping they watch the color to make sure all of the old is out. Change your trans filter before you have it done because the filter change is not part of the deal ,they claim that the process back flushes the filter clean, for 15 bucks I would rather know I got a clean filter.
Phil
Phil
Elder User
Joined: Apr 2002
Posts: 541
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From: Victoria, Texas
Changing ATF
Its really pretty simple. Unscrew the cooler line on the output side of the tranny cooler and screw in a short old piece of cooler line. If you dont have this you can take off the line going into the cooler and it will work just as well. Either way, clamp on a piece of hose, clear works best, and place it into a five gallon bucket which is marked off in quarts. Now take out the dipstick to the tranny and place a funnel in the tube. Have a helper crank up the car and as a quart of fluid comes out of the hose, pour a quart in the filler tube. You can usually stay up with the output of fluid, however if not, it is ok to turn off the vehicle and catch up pouring in fluid. I would not differ more than one quart of what is coming out while doing this procedure. I have an e40d and after about 20 quarts the fluid started to run out bright red so i stopped. take the hose off and hook everything back up and check the fluid, then get it up to temp and check again. It made a world of difference in my truck, i now do it on all of our vehicles.
good luck,
travis
good luck,
travis
Posting Guru
Joined: Jan 2001
Posts: 1,124
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From: Rural Florida Panhandle
Changing ATF
I know on several of the newer Ford vehicles, the only way to change the fuild is by a variation of the purging as mentioned above. But I am too old-fashioned to do it that way if I can be sure of a 100 percent change out. I like to drain the pan and the converter fully.
For future convenience, I always add a drain plug to the pan so that it is less messy the next time.
Winford
For future convenience, I always add a drain plug to the pan so that it is less messy the next time.
Winford
