Which Tranny fluid for 3.0crd - JeepForum.com
 
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post #1 of 12 Old 10-26-2019, 08:48 AM Thread Starter
Brit30-06
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Which Tranny fluid for 3.0crd

Hi Gents

Which Transmission fluids are people using for our German, Mercedes built, W5J400 units?

ATF+4?

Mercedes spec fluids 236.10 up to 236.14?

Various ones of the Multi use fluids, for example Amsoil multi-vehicle.

Be grateful for comments and experience with the various fluids.

I even noted some of the Dexron vi fluids are advertised as suitable for MB236.14.

Many thanks
Brit.

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post #2 of 12 Old 10-26-2019, 09:25 AM
90grandoneer
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ATF+4 is correct for the NAG1 transmission. Personally, on both my vehicles that have the NAG1, I use Redline C+ATF.

06 GCO, Dk Khaki, QDII, Flshing Hi 3rd Bk Lt, MDS "ON" Lt, Airtab Vortex Gens, Debadged, Fumoto Drain Valve, BT Catch Can, Chopped EGR Tube, SRT8 CAI, AFE Air Filter, 6spd 545RFE, Sonnax Trans Line Press Booster, SC Tuner W/Adv Trans Tune App, DS and HP tuners, Transgo Shift Kit, ARH Long Tube Hdrs w/3 in Magnaflow/Xlerator AP Exh Sys, Bilsteins, SRT Springs/Sways, Cust Eng Cvr, SRT8 frt/rear bumpers, FRI Sidewinder Cam w/6* advance/6.1 valvetrain, SLP 25% UD Pulley, BBK true 90mm T-Body, SOS Ign Coils w/.060 spark plug gaps, TEA ported/milled heads w/new valve seats, SRT Reps with 265/45&295/40X20's. Also 05 Hemi LX modded exactly like WK and Comp Cammed 06 300CSRT8.
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post #3 of 12 Old 07-14-2020, 10:31 PM
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Good day
I received my '05 WK CRD back from a gearbox specialist yesterday. It was in to have a harsh change looked at - in the end they could find nothing wrong and only changed the filter and oil (NAG1 / W5A580). I asked them which oil they had used to fill - Dexron ATF III

Only when I have driven the vehicle home, did I check my notes and realise this is the wrong fluid, i.e. not the recommended ATF +4.

How serious is this? Is acceptable / completely acceptable? I now need to start the fight in having them replace the fluid (again).

Any advice would be appreciated.
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post #4 of 12 Old 07-14-2020, 10:33 PM
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sorry - above should have read 'completely unacceptable'...
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post #5 of 12 Old 07-15-2020, 08:43 AM
90grandoneer
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STOP, do not pass go!!! This is UNACCEPTABLE and will end up killing your transmission in the long run......totally different specifications and coefficients of friction. If you do a search on the internet you'll see all kinds of pros and cons but, in the end, Chrysler/Mercedes developed a special synthetic fluid specifically for these transmissions. Make them put the right stuff in it. They now may have to change it several times unless they can figure out how to get it out of the torque converter. Be sure they change both filters again too. ATF+4 or equivalent ONLY. As I said above, I've started using Redline C+ATF in all 3 of my vehicles. Also, DO NOT use (or be highly suspicious of) any fluids that say "compatible with".

Here's a little quote from cartechbooks.com:

Chrysler ATF+4, also called ATE—a synthetic ATF introduced in 1998, it should always be used in any vehicle in which ATF+4 is specified. It can be used in Chrysler vehicles manufactured in prior years, except for minivans from before 2000, which use the 41TE/AE transmission. It is not compatible with Dexron or Mercon fluids.

06 GCO, Dk Khaki, QDII, Flshing Hi 3rd Bk Lt, MDS "ON" Lt, Airtab Vortex Gens, Debadged, Fumoto Drain Valve, BT Catch Can, Chopped EGR Tube, SRT8 CAI, AFE Air Filter, 6spd 545RFE, Sonnax Trans Line Press Booster, SC Tuner W/Adv Trans Tune App, DS and HP tuners, Transgo Shift Kit, ARH Long Tube Hdrs w/3 in Magnaflow/Xlerator AP Exh Sys, Bilsteins, SRT Springs/Sways, Cust Eng Cvr, SRT8 frt/rear bumpers, FRI Sidewinder Cam w/6* advance/6.1 valvetrain, SLP 25% UD Pulley, BBK true 90mm T-Body, SOS Ign Coils w/.060 spark plug gaps, TEA ported/milled heads w/new valve seats, SRT Reps with 265/45&295/40X20's. Also 05 Hemi LX modded exactly like WK and Comp Cammed 06 300CSRT8.
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post #6 of 12 Old 07-15-2020, 09:05 AM
johnniebravo
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Quote:
Originally Posted by Brit30-06 View Post
Hi Gents

Which Transmission fluids are people using for our German, Mercedes built, W5J400 units?

ATF+4?

Mercedes spec fluids 236.10 up to 236.14?

Various ones of the Multi use fluids, for example Amsoil multi-vehicle.

Be grateful for comments and experience with the various fluids.

I even noted some of the Dexron vi fluids are advertised as suitable for MB236.14.

Many thanks
Brit.

ATF+4 is safe and works. Use it as your default go-to fluid.


There has been numerous discussions about whether or not the 722.6 (W5J400) used in the CRD can or should use the MB spec fluid. **Opinion here** as I have not personally tested MB fluid, yet....you can probably use either ATF+4 or the older spec MB fluid originally designated for the 722.6. Its my understanding from tons of reading that the only difference will be how soft/smooth the actual transmission shifts.



NOTHING but ATF+4 or the MB spec fluid (or aftermarket equivalents) are acceptable. I would strongly wager that if the shop put Dexron in your trans, you'll need to do a number of changes/flushes to remove it all. Get it out of the trans, now.



I will say that a quick search shows that the ATF+3 and ATF+4 comparison to Dexron III has been been done often. It may work, may not. I am not a huge "but the owner's manual states" xyz advocate, but the Dexron appears to be off the mark for the Mercedes Benz transmission.

2008 CRD GC
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post #7 of 12 Old 07-15-2020, 01:20 PM
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Guys, thanks for the feedback appreciated.

I don't need to be convinced that the ATF+4 is the right stuff - have known this for a while - now angry with myself for not checking with the 'specialist' before they started filling...

Are there any proven methods for completely draining these transmissions (with torque converter) without removing it from the vehicle? If not, then I assume that 3 to 4 flushed will get the fluid to an acceptable composition again - this is going to be an expensive exercise, especially if I am adding filters to the list too.
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post #8 of 12 Old 07-16-2020, 09:19 AM Thread Starter
Brit30-06
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Quote:
Originally Posted by 90grandoneer View Post
STOP, do not pass go!!! This is UNACCEPTABLE and will end up killing your transmission in the long run......totally different specifications and coefficients of friction. If you do a search on the internet you'll see all kinds of pros and cons but, in the end, Chrysler/Mercedes developed a special synthetic fluid specifically for these transmissions. Make them put the right stuff in it. They now may have to change it several times unless they can figure out how to get it out of the torque converter. Be sure they change both filters again too. ATF+4 or equivalent ONLY. As I said above, I've started using Redline C+ATF in all 3 of my vehicles. Also, DO NOT use (or be highly suspicious of) any fluids that say "compatible with".

Here's a little quote from cartechbooks.com:

Chrysler ATF+4, also called ATE—a synthetic ATF introduced in 1998, it should always be used in any vehicle in which ATF+4 is specified. It can be used in Chrysler vehicles manufactured in prior years, except for minivans from before 2000, which use the 41TE/AE transmission. It is not compatible with Dexron or Mercon fluids.
Hi
This is enough to make your head spin

Our CRD Transmissions were made by Mercedes in Germany (W5J400) not by Chrysler in Indiana (W5A580) I mention this but not if it is relevant or not.

Chrysler have put out some confusing information on this transmission.

Our crd transmission is supposed to take ATF4. However the transmission in the dodge sprinter crd takes a mopar, Mercedes 236.12 spec fluid #5127382AB, as does the Chrysler crossfire.

Indeed it is stressed in a Chrysler TSB that ATF4 is NOT to be used in a crossfire or sprinter with the nag1. http://www.wkjeeps.com/TSB/tsb_wk_2101407.pdf Go figure.

From much reading it would seem that ATF4 and MB236.10 (which was the original fill in the W5J400) are pretty much interchangeable.

Dexron 111H and MB236.10 are very close too but having said that I would not use the Dexron by choice.

I have noticed too that many of the latter low viscosity, fuel saving ATF seem to be similar. For instance the Motul ATF IV is 'good' for Dexron iv and MB236.14. As is the Amsoil signature series.

I honestly think a CRD user will be fine with either an ATF4 or a MB236.14. The latter is fully backward compatible with the MB236.10 according to Mercedes.

This is my take on things anyway

Brit.
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post #9 of 12 Old 07-17-2020, 06:00 PM
bener_m
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Quote:
Originally Posted by RSA_Limited View Post
Guys, thanks for the feedback appreciated.

I don't need to be convinced that the ATF+4 is the right stuff - have known this for a while - now angry with myself for not checking with the 'specialist' before they started filling...

Are there any proven methods for completely draining these transmissions (with torque converter) without removing it from the vehicle? If not, then I assume that 3 to 4 flushed will get the fluid to an acceptable composition again - this is going to be an expensive exercise, especially if I am adding filters to the list too.
The place that put the wrong oil in should be covering the cost of this, it should be fully drained and flushed as per the Mercedes guidelines - not a mechanical flush, you remove the oil cooler line and run the vehicle to push the fluid out 3 litres at a time. It's gotta be done right.
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post #10 of 12 Old 07-17-2020, 06:03 PM
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Quote:
Originally Posted by Brit30-06 View Post
Hi
This is enough to make your head spin

Our CRD Transmissions were made by Mercedes in Germany (W5J400) not by Chrysler in Indiana (W5A580) I mention this but not if it is relevant or not.

Chrysler have put out some confusing information on this transmission.

Our crd transmission is supposed to take ATF4. However the transmission in the dodge sprinter crd takes a mopar, Mercedes 236.12 spec fluid #5127382AB, as does the Chrysler crossfire.

Indeed it is stressed in a Chrysler TSB that ATF4 is NOT to be used in a crossfire or sprinter with the nag1. http://www.wkjeeps.com/TSB/tsb_wk_2101407.pdf Go figure.

From much reading it would seem that ATF4 and MB236.10 (which was the original fill in the W5J400) are pretty much interchangeable.

Dexron 111H and MB236.10 are very close too but having said that I would not use the Dexron by choice.

I have noticed too that many of the latter low viscosity, fuel saving ATF seem to be similar. For instance the Motul ATF IV is 'good' for Dexron iv and MB236.14. As is the Amsoil signature series.

I honestly think a CRD user will be fine with either an ATF4 or a MB236.14. The latter is fully backward compatible with the MB236.10 according to Mercedes.

This is my take on things anyway

Brit.
I did heaps of research on this until my head was also spinning, and I mostly agree. MB236.14 is the only oil I'd go with other than the Mopar ATF+4 - personally I think the MB spec oil would be better, because they are a Mercedes assembled transmission.

They are a solid transmission, but only if you maintain them correctly with the right spec oil.
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post #11 of 12 Old 07-18-2020, 07:40 AM Thread Starter
Brit30-06
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Quote:
Originally Posted by bener_m View Post
I did heaps of research on this until my head was also spinning, and I mostly agree. MB236.14 is the only oil I'd go with other than the Mopar ATF+4 - personally I think the MB spec oil would be better, because they are a Mercedes assembled transmission.

They are a solid transmission, but only if you maintain them correctly with the right spec oil.

Hi
You ever read anything as to why Chrysler specified MB fluid for the Dodge Sprinter and ATF4 for the Grand Cherokee?

I agree. I would use MB236.14 in mine.
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post #12 of 12 Old 07-18-2020, 07:49 AM Thread Starter
Brit30-06
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Quote:
Originally Posted by 90grandoneer View Post
STOP, do not pass go!!! This is UNACCEPTABLE and will end up killing your transmission in the long run......totally different specifications and coefficients of friction. If you do a search on the internet you'll see all kinds of pros and cons but, in the end, Chrysler/Mercedes developed a special synthetic fluid specifically for these transmissions. Make them put the right stuff in it. They now may have to change it several times unless they can figure out how to get it out of the torque converter. Be sure they change both filters again too. ATF+4 or equivalent ONLY. As I said above, I've started using Redline C+ATF in all 3 of my vehicles. Also, DO NOT use (or be highly suspicious of) any fluids that say "compatible with".

Here's a little quote from cartechbooks.com:

Chrysler ATF+4, also called ATE—a synthetic ATF introduced in 1998, it should always be used in any vehicle in which ATF+4 is specified. It can be used in Chrysler vehicles manufactured in prior years, except for minivans from before 2000, which use the 41TE/AE transmission. It is not compatible with Dexron or Mercon fluids.
Hi.
There is only one filter in the CRD transmission. W5J400.

Apologies for being pedantic. I only mention this for RSA Limited benefit.
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