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What woukd you do with this transmission? #4712313
03/31/18 11:49 AM
03/31/18 11:49 AM
Joined: Jan 2010
Posts: 124
ca
monster1 Offline OP
monster1  Offline OP
Joined: Jan 2010
Posts: 124
ca
2004 Dodge Ram Cummins with 75,000 miles. Had my tire shop/autocare center drop pan, replace filter and top off trans fluid at about 55,000 miles. The fluid now looks dirty. It's reddish brown in color. Should I change filter and top off again or do a flush at home by pulling the return line and replacing the fluid as it gets pumped out? I've heard horror stories about flush machines, but if I do it at home using the return line, I see no difference because it's the transmissions pump doing the work.

Thanks for putting up with my posts.

Last edited by monster1; 03/31/18 11:50 AM.
Re: What woukd you do with this transmission? [Re: monster1] #4712317
03/31/18 11:52 AM
03/31/18 11:52 AM
Joined: Jan 2008
Posts: 10,797
OH
SatinSilver Offline
SatinSilver  Offline
Joined: Jan 2008
Posts: 10,797
OH
Return line fluid exchange. Use the correct fluid. Check level per the owner's manual. Should be golden then.

Re: What woukd you do with this transmission? [Re: monster1] #4712320
03/31/18 11:54 AM
03/31/18 11:54 AM
Joined: Apr 2017
Posts: 1,140
SF BAY AREA, CA
dogememe Online content
dogememe  Online Content
Joined: Apr 2017
Posts: 1,140
SF BAY AREA, CA
if you have a dipstick, use one of those fluid extractor things. you can change like a gallon at a time that way, and just measure what comes out so you know how much to put back in.


2010 Ford Escape FWD 2.5 ~90K Miles
Currently: Royal Purple 5W-30, Wix 51348
I prefer Royal Purple, Valvoline, Castrol, and O'Reilly oils.
Re: What woukd you do with this transmission? [Re: monster1] #4712322
03/31/18 11:56 AM
03/31/18 11:56 AM
Joined: Dec 2017
Posts: 1,143
US
JLTD Online shocked
JLTD  Online Shocked
Joined: Dec 2017
Posts: 1,143
US
Either way should be successful; the machine flush at higher mileage can be....bad.

I've always had good results with a pan drop/filter/refill every 30-50k depending in vehicle.


I'm a thickie; assimilate
But 20s have their place

Using AMSOIL

Hers: 2008 Jeep Liberty 138k, SS 5w30/Amsoil

His: 2015 4Runner 41k, OE 5w20/Wix

Re: What woukd you do with this transmission? [Re: monster1] #4712323
03/31/18 11:56 AM
03/31/18 11:56 AM
Joined: Dec 2016
Posts: 6,429
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,429
Waco, TX
Originally Posted By: monster1
Should I change filter and top off again


Leave the filter in, I seriously doubt it is a restriction.

Originally Posted By: monster1
or do a flush at home by pulling the return line and replacing the fluid as it gets pumped out?


That is what I typically do, but I just let it run until I get bubbles, shout it off, hook it all back up again, then refill to the proper level. Repeat every 25,000 miles.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: What woukd you do with this transmission? [Re: monster1] #4712337
03/31/18 12:14 PM
03/31/18 12:14 PM
Joined: Jun 2005
Posts: 11,408
Santa Barbara, CA
bdcardinal Online content
bdcardinal  Online Content
Joined: Jun 2005
Posts: 11,408
Santa Barbara, CA
The line flush should work. If it were my truck I would consider adding one of the spin on in-line filters.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: What woukd you do with this transmission? [Re: monster1] #4712344
03/31/18 12:23 PM
03/31/18 12:23 PM
Joined: Mar 2007
Posts: 1,668
NE
VNTS Offline
VNTS  Offline
Joined: Mar 2007
Posts: 1,668
NE
Get a new pan, put B&M drain plug in the pan, mopar filter, redline C+ or Amsoil ATF. do the pan drop filter, clean magnet and refill and then the cooler line flush, then in the future just drain and refill.

Re: What woukd you do with this transmission? [Re: monster1] #4712345
03/31/18 12:23 PM
03/31/18 12:23 PM
Joined: Dec 2002
Posts: 42,136
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,136
New Jersey
If you can drop the pan and replace the filter, I see no reason to do anything else. Only consideration would be to try to find a pan with a drain plug.

No reason to flush if you can pan drop, imo.

Re: What woukd you do with this transmission? [Re: monster1] #4712348
03/31/18 12:30 PM
03/31/18 12:30 PM
Joined: Jun 2005
Posts: 11,408
Santa Barbara, CA
bdcardinal Online content
bdcardinal  Online Content
Joined: Jun 2005
Posts: 11,408
Santa Barbara, CA
Mag Hytec also makes nice pans, they have a drain plug and increased capacity.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: What woukd you do with this transmission? [Re: SatinSilver] #4712467
03/31/18 03:36 PM
03/31/18 03:36 PM
Joined: Sep 2004
Posts: 21,726
Orlando, FL
Mr Nice Offline
Mr Nice  Offline
Joined: Sep 2004
Posts: 21,726
Orlando, FL
Originally Posted By: SatinSilver
Return line fluid exchange. Use the correct fluid. Check level per the owner's manual. Should be golden then.


+ 1000000

Re: What woukd you do with this transmission? [Re: monster1] #4712545
03/31/18 05:16 PM
03/31/18 05:16 PM
Joined: Mar 2004
Posts: 20,822
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,822
Upstate NY
What horror stories have you heard about a flush machine? It does the same thing you are considering doing with the return line except no one has to watch over it.

Now some times they add a chemical prior to flush. And of course they would need to add the proper ATF to the new fluid container in the flush machine. And some places will tell you the flush with their machine eliminates the need to change the filter. It does not.

But the basic process of a flush machine is sound.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: What woukd you do with this transmission? [Re: Donald] #4712598
03/31/18 06:14 PM
03/31/18 06:14 PM
Joined: Jan 2010
Posts: 124
ca
monster1 Offline OP
monster1  Offline OP
Joined: Jan 2010
Posts: 124
ca
Originally Posted By: Donald
What horror stories have you heard about a flush machine? It does the same thing you are considering doing with the return line except no one has to watch over it.

Now some times they add a chemical prior to flush. And of course they would need to add the proper ATF to the new fluid container in the flush machine. And some places will tell you the flush with their machine eliminates the need to change the filter. It does not.

But the basic process of a flush machine is sound.


From what I've read, depending on how the transmission was maintained, the flush causing crud to break off and start making problems for an otherwise ok transmission. Kinda like flushing an engine with high miles. And also the issue of flushing but not dropping the pan to change the filter.

Last edited by monster1; 03/31/18 06:23 PM.

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