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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 05-14-2012, 12:33 PM
shortedaman shortedaman is online now
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Mein Auto: e39 525I sport
525i manual transmission fluid change.

Ive looked but cant seem to find a diy to change manual tranny fluid in a 2001 525. Also is pennzoil syncromesh good to use. Also changing the fluid in a manual trannny is alot easier than changing it in an automatic right? Anyone point me in the right direction.
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  #2  
Old 05-14-2012, 12:53 PM
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BentValve BentValve is online now
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Google is your friend:

http://bimmerboard.com/forums/posts/189240
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  #3  
Old 05-14-2012, 01:03 PM
shortedaman shortedaman is online now
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I did google it and ice seen that one. But I wasnt sure if it was the same for a 2001 525. So I have the same tranny.
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  #4  
Old 05-14-2012, 01:15 PM
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Remove the *fill plug* FIRST.

Remove drain plug.

Replace drain plug.

Using a small hand pump, add new fluid until it starts to dribble out of the fill hole.

Replace fill plug.

RedLine MTL, Royal Purple SynchroMax, Swepco, Pentosin, are all good....you live in a warm climate, so any of them will work well. You`ll need 2 quarts.
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  #5  
Old 05-14-2012, 01:21 PM
shortedaman shortedaman is online now
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So pennzoil syncromesh is fine?
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  #6  
Old 05-14-2012, 01:53 PM
shortedaman shortedaman is online now
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Also is mobil 1 synthetic ls 75w_90 ok to use in the diff or should I get non synthetic.
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  #7  
Old 05-14-2012, 01:56 PM
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I run Mobil1 75w-90.
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  #8  
Old 05-14-2012, 02:06 PM
shortedaman shortedaman is online now
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Advance auto says it only comes in synthetic?
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  #9  
Old 05-14-2012, 02:32 PM
shortedaman shortedaman is online now
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Please help. This is so confusing. Theres just too much info on the web. I just need to know if its the mobil 1 75_90 ls synthetic or not.
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  #10  
Old 05-14-2012, 02:38 PM
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Jason5driver Jason5driver is offline
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Quote:
Originally Posted by Fast Bob View Post
Remove the *fill plug* FIRST.

Remove drain plug.

Replace drain plug.

Using a small hand pump, add new fluid until it starts to dribble out of the fill hole.

Replace fill plug.

RedLine MTL, Royal Purple SynchroMax, Swepco, Pentosin, are all good....you live in a warm climate, so any of them will work well. You`ll need 2 quarts.
+1.
There you go...!

Quote:
Originally Posted by shortedaman View Post
Please help. This is so confusing.
There is just too much info on the web.
I just need to know if Mobil 1 75w-90 is synthetic or not.
Yes, it should be.
Look on the bottle.
It should say "synthetic".

http://www.autozone.com/autozone/acc...fier=1437_0_0_
http://www.autozone.com/autozone/acc...er=807688_0_0_
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  #11  
Old 05-14-2012, 03:31 PM
edjack edjack is offline
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Consider wrapping some Teflon tape around the trans drain plug, about 3 wraps. This will ensure that the plug will not seep, as it did on my car.

Make sure no tape goes over the end of the plug.
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  #12  
Old 05-14-2012, 06:52 PM
shortedaman shortedaman is online now
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Thanks all just finished and man what a difference. Shifts alot smoother now. again thanks for your help.
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  #13  
Old 06-17-2012, 11:45 AM
jerry72munoz jerry72munoz is offline
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where is the fill plug? do i fill it where i drain the fluid?
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  #14  
Old 06-17-2012, 12:25 PM
shortedaman shortedaman is online now
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Theres two plugs one on top of the case and the other below it. Remove fill plug first then remove drain plug. After drained put drain plug back and use a hand pump to pump new fluid into fill hole. I found it was easier with a friend and using five feet of tubing from the pump, this helped prevent spillage in that akward position under the car.i didnt teflon my plug either and it is fine just make sure you tighten it well, and thread it right.

Any of yall know where to get that 14mm hex to remove rear diff fluid. Cant find one anywhere.
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  #15  
Old 06-17-2012, 12:52 PM
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Fast Bob Fast Bob is offline
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Quote:
Originally Posted by shortedaman View Post
Theres two plugs one on top of the case and the other below it. Remove fill plug first then remove drain plug. After drained put drain plug back and use a hand pump to pump new fluid into fill hole. I found it was easier with a friend and using five feet of tubing from the pump, this helped prevent spillage in that akward position under the car.i didnt teflon my plug either and it is fine just make sure you tighten it well, and thread it right.

Any of yall know where to get that 14mm hex to remove rear diff fluid. Cant find one anywhere.
If you`re using the "friend and 5 feet of tubing" method, you don`t even need a pump....just have the friend pour via gravity, utilizing a small funnel.
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  #16  
Old 06-19-2012, 08:11 AM
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DHoang DHoang is offline
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Quote:
Originally Posted by edjack View Post
Consider wrapping some Teflon tape around the trans drain plug, about 3 wraps. This will ensure that the plug will not seep, as it did on my car.
.
The drain theads on the trans plug as well as on the diffy plug is a "PIPE" thread. it's a tapered thread. So they have to be tightened down REALLY HARD in order to seal perfectly.

Quote:
Any of yall know where to get that 14mm hex to remove rear diff fluid.
I got mine at Sears, but I've seen them at Harbor Freight as well. Autozone and Oreilly won't have them b/c they don't sell in large quantities.
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  #17  
Old 06-19-2012, 11:07 AM
pshovest pshovest is online now
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Teflon tape reduces the friction tremendously. If you put teflon tape on thread AND tighten down really hard, like most who don't understand the forces a tapered thread can generate, you will CRACK the aluminum case and it will drip forever.

Pipe dope, Permatex No. 2 or something similar, is a better choice then teflon tape for thread sealant.

Paul S
BMW CCA 69606
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