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Change trans fluid? If so, how and with what? #4651894
01/31/18 10:49 AM
01/31/18 10:49 AM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
Embarrassingly enough, I haven't changed the trans fluid in my Land Rover LR3. It has a ZF6HP (I think that's the name, it's a 6 speed ZF auto). Up until recently, it was thought to be a lifetime fill, so I never thought about it. Now Land Rover and ZF have changed their tune. I have 160k miles on it and it shifts perfectly, I sense no issues with it. I have a 2000 mile round trip coming up in mid March and was wondering if I should change it, and if so, would it be too risky to change before a trip? Should I do a pan drop or full flush? I was planning on sticking with OEM fluid, but open to other ideas.

Thanks!


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651907
01/31/18 10:58 AM
01/31/18 10:58 AM
Joined: Jun 2009
Posts: 1,813
Wisconsin
wallyuwl Offline
wallyuwl  Offline
Joined: Jun 2009
Posts: 1,813
Wisconsin
I just changed mine for the first time (GMC Envoy) by taking off one of the cooler lines and attaching a clear hose. You have a 5 gallon bucket to let the fluid from the hose run into, let the vehicle run until the fluid starts sputtering. Shut the vehicle off. Put in 3-4 quarts of trans fluid, start vehicle again until it starts sputtering fluid. Then you turn the vehicle on and start filling fluid into the top fill until it is nice and red coming out of the hose into the bucket. When this happens, turn the vehicle off, reattach the cooler line, and then fill to the proper fluid level.

Works a lot better with two people, so one can watch the bucket/hose and start/stop the vehicle, while the other one fills.

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651909
01/31/18 10:59 AM
01/31/18 10:59 AM
Joined: Oct 2014
Posts: 11,819
Idaho
CT8 Online content
CT8  Online Content
Joined: Oct 2014
Posts: 11,819
Idaho
See what it takes to change the filter. Clean oil is happy oil.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651912
01/31/18 10:59 AM
01/31/18 10:59 AM
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
I would do a pan drop, clean, replace filter and do a line off fluid exchange with Amsoil ATF.

2cents


ASE L1, Master. Deutsch Meisterbrief.
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651916
01/31/18 11:01 AM
01/31/18 11:01 AM
Joined: Jun 2002
Posts: 19,230
Iowegia - USA
MolaKule Offline
MolaKule  Offline
Joined: Jun 2002
Posts: 19,230
Iowegia - USA
At that mileage, I think a complete exchange is in order with filter replacements as well

I would imagine the ATF looks like an old 10W30 engine oil by now.


Last edited by MolaKule; 01/31/18 11:01 AM.

Reading is fundamental; understanding is not a given ability.
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651917
01/31/18 11:02 AM
01/31/18 11:02 AM
Joined: Aug 2008
Posts: 3,150
USA
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,150
USA
Vote to wait until after the trip.

And then I also vote to do a series of drain and fills. No cooler line exchange.

Re: Change trans fluid? If so, how and with what? [Re: Reddy45] #4651929
01/31/18 11:07 AM
01/31/18 11:07 AM
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,898
MA, Mittelfranken.de
What your reasoning for this?


ASE L1, Master. Deutsch Meisterbrief.
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651930
01/31/18 11:07 AM
01/31/18 11:07 AM
Joined: Feb 2017
Posts: 27
Michigan
Little_Lebowski Offline
Little_Lebowski  Offline
Joined: Feb 2017
Posts: 27
Michigan

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651958
01/31/18 11:49 AM
01/31/18 11:49 AM
Joined: Dec 2011
Posts: 4,736
North Carolina
rooflessVW Online content
rooflessVW  Online Content
Joined: Dec 2011
Posts: 4,736
North Carolina
Dex VI + Lubegard Platinum.

Awesome in my ZF 6HP.


"Zed's dead baby, Zed's dead."
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651992
01/31/18 12:37 PM
01/31/18 12:37 PM
Joined: May 2016
Posts: 717
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline
Joined: May 2016
Posts: 717
Canada

Look into dropping the pan and changing the filter too! ATF usually stays pink or red for life
unless something terrible is happening. ATF is not supposed to get visibly dirty like engine oil.

ATF picks up lots of super tiny wear metals that are only partially picked up by the OEM pan magnet,
so swapping out the fluid helps. In my case I put extra magnets in the pan since GM admitted in a TSB
that the OEM magnet was inadequate. Key thing is to make sure there's enough clearance.

However, I'd avoid a 'flush' since this can stir up particles that settled in the tranny, at 160K,
I would not do it. Do a google search for "ZF6HP transmission problems" and see what other people say.

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4651993
01/31/18 12:39 PM
01/31/18 12:39 PM
Joined: May 2015
Posts: 1,992
America
Alfred_B Offline
Alfred_B  Offline
Joined: May 2015
Posts: 1,992
America
Wait until after the trip.

If you really want to change it, I would recommend to drop the pan and do a filter replacement and use ZF fluid. I wouldn't use Amsoil or some other non-OEM fluid.

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4652027
01/31/18 01:08 PM
01/31/18 01:08 PM
Joined: Jun 2009
Posts: 1,813
Wisconsin
wallyuwl Offline
wallyuwl  Offline
Joined: Jun 2009
Posts: 1,813
Wisconsin
Yeah, at that mileage do a filter change, too. It will be pretty easy once you get most of the fluid out through the cooler line. I should have also suggested that.

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4652030
01/31/18 01:09 PM
01/31/18 01:09 PM
Joined: Mar 2004
Posts: 20,747
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 20,747
Upstate NY
Originally Posted By: HoosierJeeper
Embarrassingly enough, I haven't changed the trans fluid in my Land Rover LR3. It has a ZF6HP (I think that's the name, it's a 6 speed ZF auto). Up until recently, it was thought to be a lifetime fill, so I never thought about it. Now Land Rover and ZF have changed their tune. I have 160k miles on it and it shifts perfectly, I sense no issues with it. I have a 2000 mile round trip coming up in mid March and was wondering if I should change it, and if so, would it be too risky to change before a trip? Should I do a pan drop or full flush? I was planning on sticking with OEM fluid, but open to other ideas.

Thanks!


A cooler line ATF exchange provides the best exchange of fluid using only a tiny bit more ATF than the transmission holds. Way to go if you use expensive ATF. Look at Amsoil. Its the only ATF I have used in many years.

If your vehicle has a filter than can be changed or wiped clean that should be done and will probably require the pan to be dropped. Not a bad idea as you can wipe the crud from the pan.

Then there is probably a transfer case and front and rear diff. They should be serviced also. But the transmission is the priority.

Do not believe any shop who says that they add a cleaner to the ATF, run it for 20 minutes and then do a flush and the process cleans the transmission filter. It does not.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4652049
01/31/18 01:21 PM
01/31/18 01:21 PM
Joined: Jan 2004
Posts: 4,142
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,142
California
A few ZF parts distributors sell a kit with 6-8 quarts of ZF LifeGuard 6(which Ford also uses as Mercon SP and cheaper too if MaxLife or Amsoil ain't your thing), a new pan/filter assembly along with the gaskets bolts and maybe a new mechatronic seal as well.


http://www.thectsc.com/products/oil-chan...yce-186-61.html

Re: Change trans fluid? If so, how and with what? [Re: HoosierJeeper] #4652071
01/31/18 01:45 PM
01/31/18 01:45 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline OP
HoosierJeeper  Offline OP
Joined: Nov 2016
Posts: 1,278
WI
Thanks everyone for the tips. I think I'm settled on using ZF fluid and will definitely replace the filter. I'm leaning towards doing a pan drop for now and then a full flush later. Do you think that will minimize the risk of creating an issue or do you think either way it'll be safe?


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)
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