Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E34 (1989 - 1995)

E34 (1989 - 1995)

Reply
 
Thread Tools Display Modes
  #1  
Old 11-14-2012, 06:53 AM
Microtesties Microtesties is offline
Unregistered User
Location: Concord, NH
 
Join Date: Oct 2012
Posts: 101
Mein Auto: 1990 BMW 525i
Manual Transmission Lubrication

Hey everyone, I'm planning on changing the transmission oil in my '90 E34 M20. I have read a lot of conflicting opinions, it seems no one agrees on what to put in the gearbox.. So what are your opinions/experiences? ATF, diff oil, motor oil?
__________________
Year: 1990
Model: 525i
Transmission: 5 speed
Mileage: 250k
Reply With Quote
Advertisement
  #2  
Old 11-14-2012, 08:03 AM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Since I have an automatic, I haven't looked it up, but I would use the owner's manual as my primary resource and the Bently manual as the secondary resource.
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

Reply With Quote
  #3  
Old 11-14-2012, 08:10 AM
haolibird haolibird is offline
Habitual User
Location: san diego
 
Join Date: Dec 2008
Posts: 510
Mein Auto: E39 540i, E39 M5, E34 535
I have had personal experience with both Redline and Royal Purple.

RP smoothed out the shifting in the E39, after the Redline made it nearly impossible to shift.

WhenI got the E34, I just went with what was working for me in the past.
No problems.

In all fairness to RL, people in the 39 forum use it to great satisfaction, so maybe my 540 is allergic.

Oh, ATF is what it calls for.

hb
Reply With Quote
  #4  
Old 11-14-2012, 08:35 AM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Quote:
Originally Posted by haolibird View Post
I have had personal experience with both Redline and Royal Purple.

RP smoothed out the shifting in the E39, after the Redline made it nearly impossible to shift.

WhenI got the E34, I just went with what was working for me in the past.
No problems.

In all fairness to RL, people in the 39 forum use it to great satisfaction, so maybe my 540 is allergic.

Oh, ATF is what it calls for.

hb
I just looked at Bentley (just to learn) and found it to be quite vague. Your advice seems to be based on much experience.

OP, I would take HB's advice were I in your position
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

Reply With Quote
  #5  
Old 11-14-2012, 05:16 PM
BMWFatherFigure's Avatar
BMWFatherFigure BMWFatherFigure is offline
Old School
Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,717
Mein Auto: E23;E30;E38;E32;E34 +
What does the hand book say? Have you tried the Castrol (or other manufacturer) sites?
__________________
Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
Reply With Quote
  #6  
Old 11-16-2012, 08:58 AM
haolibird haolibird is offline
Habitual User
Location: san diego
 
Join Date: Dec 2008
Posts: 510
Mein Auto: E39 540i, E39 M5, E34 535
BMR LVR,

Thanks for the props.

If you crawl under the car, there is (should be) a tag specifying fluid. (Mine does).
We have the same model year.
I don't know if they put a different trans in the 525 than the 535.
Wiki would tell the tale, as well.

Have you looked?

T
Reply With Quote
  #7  
Old 11-16-2012, 11:32 AM
robertobaggio20 robertobaggio20 is offline
Banned
Location: earth
 
Join Date: Oct 2009
Posts: 3,403
Mein Auto: car
Ignore the transmission model. Dex3 is supposed to be dangerous to my tranny according to bentley but i have been using it for 3 years with no problems. Use any type of semi or fully synthetic transmission oil. Only the big boys have it and you cant go wrong. If unsure just use zf lifeguard. However this is very pricey, but you can basically double your oil change interval over dino oil.

Or just follow haolibird's suggestions. Royal Purple seems to be the aftermarket brand with the best track record.

Last edited by robertobaggio20; 11-16-2012 at 11:33 AM.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E34 (1989 - 1995)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump


All times are GMT -7. The time now is 06:13 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms