Originally Posted by sporadic_kit
I have done some research on this and found that I should only use MS5931 fluid and not ATF+4.
So I call up my local Chrysler and they tell me that I can and should use ATF4 becuase the MS5931 is no longer available.
Either they are talking crap or the text below is wrong. Personally I think they are talking crap. Can someone please confirm?
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.
With the way this is stated, I wouldn't. Hit the yellow pages and call a few places. If they all say to use ATF-4, then I'd do it. The problem with some of the advice you'll get on the forum is you don't know if you're believing a mechanic, or a 16 year old.