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Originally Posted by Bimmer360
Tomaz,
I have 100K in the clock and about to have my step 4.4i transmission oil and filter changed, but one guy said in a different thread, and i quote: "You need to be careful with changing the fluid on Automatics with 100,000 miles though. Sometimes changing the fluid on high mileage automatics makes for problems that were not there to begin with." Do you know if this is true?
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That is what the dealer told me and I think it's complete nonsense. That might have some truth in it if you use the wrong fluid but I doubt changing your using the proper fluid will create any new problems that weren't there to begin with. If there is a major problem, changing your fluid probably won't cure it, it might just delay the inevitable. There is no way to determine if changing the fluid will make the transmission last longer but it's certainly worth the peace of mind that it will.