2003 Grand Cherokee Power Steering Fluid - JeepForum.com
 
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post #1 of 9 Old 03-25-2012, 06:08 PM Thread Starter
joh2jeep
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Wj 2003 Grand Cherokee Power Steering Fluid

Hello,
I read that my 2003 Grand Cherokee 4.7L needs MS-5931 power steering fluid. The dealer sold to me MS-10838 instead, and I only realized that difference (due to the different smell) while I was topping up. Does anyone know whether both fluids can be used, or is it exclusively the MS-5931 I should use?

Thank you in advance for your advice!
Johannes

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post #2 of 9 Old 03-25-2012, 06:44 PM
the88thpianoman
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If you have a hydraulic powered radiator fan, then you need the specific hydraulic fluid, which I presume is the 10838. It's red directly out of the bottle. If you have a mechanical clutch and/or electric ran that does not run off the power steering pump, then you need the 5931 spec, which is (more or less) clear fresh out of the bottle, but will turn pink to red with use.

Edit: I don't know if topping off a 5931 system with 10838 will cause any harm. My educated guess is harmless but not useful, but I could be wrong. Adding 5931 to the hydraulic system does spell bad news, but fortunately that's not a possible situation you're dealing with here.

If you do require the hydraulic stuff, you are using the correct fluid, and it is dealer only AFAIK. If you only require the 5931 spec, it can be had from the dealer, but the advance auto parts house brand (and I think also valvoline) steering fluid specifically covers the 5931 spec, but no other brands do.

2003 WJ in Jeep Green Metallic, 4.0/242/4.10's. 4" Teraflex springs w/ RE monotube shocks and IRO short arms, cheap intake w/ amsoil filter, 2.5" hi flow cat and back exhaust, lots of lights and other misc crap.

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post #3 of 9 Old 03-25-2012, 06:57 PM Thread Starter
joh2jeep
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Thanks for the quick and detailed response! I have the hydraulic fan, so i guess I will need to add the 10838 fluid.

Johannes
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post #4 of 9 Old 03-25-2012, 07:09 PM
the88thpianoman
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Yep, you've got the right stuff

2003 WJ in Jeep Green Metallic, 4.0/242/4.10's. 4" Teraflex springs w/ RE monotube shocks and IRO short arms, cheap intake w/ amsoil filter, 2.5" hi flow cat and back exhaust, lots of lights and other misc crap.

Check out my build thread here:
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post #5 of 9 Old 03-26-2012, 01:03 AM
billzcat1
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No no no no! MS-10838 is not the correct stuff for any WJ, regardless of hydraulic fan or not. That fluid was introduced for the 2005 WK models. WJs run MS-5931 only!

http://www.moparmagazine.com/2010/nov-dec/fluid_selection_power_steering_brake_fluids.html

Quote:
Originally Posted by Mopar Magazine
Power Steering Fluid
Excellent power steering fluid for all pre-1998 vehicles. Recommended for pre-2005 Grand Cherokee.
1 Pint (16 Oz.) Bottle
Part No. 04883077
MS-5931

HYDRAULIC System Power Steering Fluid
Specifically developed for 2005–2010 Grand Cherokee and 2006–2010 Commander hydraulic/power steering systems.
1 Quart (32 Oz.) Bottle
Part No. 05142893AA
MS-10838
http://wjjeeps.com/service/maintenance_wj.htm#OTHER

Quote:
Originally Posted by www.wjjeeps.com
Important note:
The factory fill power steering fluid for all 1999-2004 Grand Cherokees is a unique fluid, MS5931. ATF+4 (MS9602) should not be mixed or used as a �topping off� fluid on the Grand Cherokee WJ. All WJ models should be serviced using ONLY the special MS5931 fluid. ATF+4 is NOT an approved Power Steering Fluid and should never be used under any circumstances. Note that all fluids will darken in color with usage and fluid color is no longer an indication of fluid condition."


http://www.wjjeeps.com/tsb/tsb_wj_1900503.pdf

Quote:
Originally Posted by TSB #1900503
WJ/WG and ZH vehicles use unique power steering fluids....
WJ 1999 - 2004 MS5931
The Owner's Manual, Page 293 of PDF.
Quote:
Originally Posted by The Owner's Manual
"Power Steering Reservoir Mopar Power Steering Fluid (MS-5931)
Hopefully 4 credible sources are enough to show that MS-5931 (or so-rated equivalent) is the correct fluid.




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~Richard
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post #6 of 9 Old 03-26-2012, 01:14 AM
the88thpianoman
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According to that WJjeeps link, you are correct, and the 5931 is the only spec for both standard WJ steering and hydraulic fan steering. That is contrary to everything I've heard from both my local dealership and WJ tech here, indicating that the standard steering and hydraulic fan in the WJ took different fluids that were not interchangeable.

I'll be very interested to get to the bottom of this one.

2003 WJ in Jeep Green Metallic, 4.0/242/4.10's. 4" Teraflex springs w/ RE monotube shocks and IRO short arms, cheap intake w/ amsoil filter, 2.5" hi flow cat and back exhaust, lots of lights and other misc crap.

Check out my build thread here:
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post #7 of 9 Old 03-26-2012, 01:47 AM
mycreativename
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Just as I have said before, the parts departments know precisely jack-**** about what they're selling and you've gotta go in there knowing specifically what you need otherwise they'll give you the wrong stuff. I had similar issues with a parts department here first trying to tell me I was wrong that the NV247 takes any special fluid and then again arguing with me about a crankcase breather. I expect that stuff from general autoparts stores, but I was really surprised that a dealer parts departments would act in such a manner.

Needless to say I stopped going there and drove the extra 10 miles to the next dealer.

Anyways, I will second that I have never heard of anyone using anything other than MS5931 in their WJ's.

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post #8 of 9 Old 03-26-2012, 03:22 AM
vwbuge
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advance auto parts fluid is fine.

2002 Grand Cherokee Limited
4.7 HO
2" BB Rusty's shocks
245/70-17
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post #9 of 9 Old 03-27-2012, 10:15 PM Thread Starter
joh2jeep
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Thank you for the research and help, Richard! I exchanged the 10838 for the 5931 - the parts department was confused as well, but all the sources you list are clear on that MS-5931 is the right stuff.

Thanks!
Johannes
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