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  #21  
Old 02-26-2016, 04:32 AM
sew sew is offline
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@StephenVA Great document from ZF. Thanks for sharing.
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  #22  
Old 02-26-2016, 09:58 AM
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There is a ton more information on ZF trans out there on the web just as there is a whole host of knowledge on the GM versions, for those who want to understand how these are serviced. One of our forum members who rebuild trans in Europe posts the process and tips and trick on rebuilds that are worth a read. Just search trans and it will pop up. Also the posting on "All in on the 4.6 rebuild" has a few more postings.
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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
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  #23  
Old 02-26-2016, 10:00 AM
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Found the thread on the 4.6 rebuild, epic
http://www.xoutpost.com/bmw-sav-foru...-once-all.html
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2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
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  #24  
Old 02-28-2016, 11:22 AM
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2004 X5 4.4 N62 engine.
I did the first transmission drain,filter,fill at 88K
The fluid was a little dirty. Not sludge, just a little colored.
I had a downshift from 2 to 1 hardness problem.
Also, the X5 seemed to waffle at 37 MPH as what gear to be in.
Both problems have diminished considerably.

I feel that the new fluid smoothed out the problems.
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  #25  
Old 02-28-2016, 02:24 PM
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The change on my 2000 60k miles (fluid changed at 40k) is, and always has been, silky smooth. (Fingers firmly crossed that with regular changes it'll stay that way!) Both 2002 E46 330i cars (also ZF) has the 2nd->1st "inelegant" change issue. An oil change *eases* the problem from my experience, but basically it's a weakness of the 'boxes. My old 1999 540i E39 died as a result of the 2nd->1st change, effectively. I got that one too late to change the gearbox oil in time to rescue it...
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  #26  
Old 10-15-2020, 11:25 PM
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Sorry for pulling up a old thread but my 2004 e53 is on 180k and no proof that the gearbox oil has ever been done. At this mileage should I change oil and filter or just leave it
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  #27  
Old 10-16-2020, 01:56 AM
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Quote:
Originally Posted by roryb View Post
Sorry for pulling up a old thread but my 2004 e53 is on 180k and no proof that the gearbox oil has ever been done. At this mileage should I change oil and filter or just leave it
What does your code say? VTR wear? The Foxwell will tell you if you are out of spec (as will others) but if no codes show up and you trust that someone didn't just clear and reset everything then you are most likely good.

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  #28  
Old 10-16-2020, 04:37 PM
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No error codes on there. Checked using bmw software
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  #29  
Old 10-16-2020, 05:22 PM
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I think Overboost changed his original fluid (GM 5L40-E) at about 180,000 miles and found it "honey" colored, but with no notable debris or sludge in the pan.


I have never changed the fluid in mine, regularly tow a 1300 pound PWC trailer 5 months per year, and have experienced no operational issues.


I have gathered through the forum and ZF's website that their models are more sensitive to not changing fluid every 60-70,000 miles.



2002 X5 3.0 383,700 miles (GM 5L40-E)
2014 428i 71,700 miles (ZF 8-speed) Fluid change coming at 72,000 miles



2004 325i sold at 123,600 miles Fluid never changed

2001 325i sold at 66,000 miles Fluid never changed


1970 Firebird Under restoration 500HP capacity Turbo-350 30,000 mile fluid change interval for sure!
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  #30  
Old 10-16-2020, 05:34 PM
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For what help it is, at 180k miles it’s really a gamble. A simple drain and fill “probably” won’t hurt anything, most likely, but I would not do a power flush or reverse flush - my personal opinion, they just break too much crap loose and can contaminate the valve body.

Gramp used to say, if you’re not a gamblin man and it ain’t broke..., don’t fix it.

So, the answer is, at 180k, it’s really up to you and the risk you’re willing to take. Me, I change mine every 50k miles like religion and I am happy to say..., so far..., so good.


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