Welcome to the North American Subaru Impreza Owners Club Tuesday October 24, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 12-26-2001, 03:56 PM   #1
Scooby Newbie
Member#: 3416
Join Date: Jan 2001
Location: St. Louis, MO
2000 Impreza 2.5RS
Silverthorn Metallic

Default Frnt & Rr Diff + X Case Fluid change

Getting ready to do all fluid changes at 25k.

Front and rear Diff - What fluid to use? Mobil1 75W-80 ok?
Any secrets to drainging the front?

X Case - What fluid and how do I drain fill?

Trans sounds simple, anyone know how much fluid and what type to use>?

Model is MY00 2.5RS 5 spd.

Thanks for any help to make this easier.
* Registered users of the site do not see these ads.
loeryder is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-26-2001, 04:11 PM   #2
North Ursalia
Miss You Mom
Oct 1940 - Feb 2008

Super Moderator
Member#: 809
Join Date: Jan 2000
Chapter/Region: NESIC
Location: NH, Land Of Many Trees
2000 2.5 RS, '14 For
92 5MT SVX


North Ursalia is offline   Reply With Quote
Old 12-27-2001, 12:31 AM   #3
Scooby Guru
Member#: 456
Join Date: Oct 1999
Chapter/Region: NWIC
Location: Redmond, WA, USA
2008 Forester XT
Steel Gray Metallic


Yeah, but don't get under the car while supported by a jack like shown in the last picture.

Suggested fluids:

manual transmission: Redline 75W90NS
rear diff: Redline 75W90

ANZAC_1915 is offline   Reply With Quote
Old 12-27-2001, 07:22 AM   #4
Scooby Specialist
Member#: 2817
Join Date: Nov 2000
Location: NYC and Troy, NY
2001 Impreza 2.5RS


I used Valvoline Full Synthetic 75w-90 Gear Oil (which I bought at NAPA) for both tranny and rear diff. I can shift really well in any weather. I made a mistake of using 80w-90. Don't use 80w-90 because you won't be able to shift in the 32 degree or below weather.

Because you have a manual transmission, the transmission includes front and center differentials already. So, changing the transmission fluid takes care of the front and center diffs.

Here is the procedure for manual tranny and rear diff:
Then click on "Maintenance and Repair".

Make sure you have a breaker bar or impact wrench gun for the rear diff. The drain and filler bolts are very hard to loosen.
tmat3 is offline   Reply With Quote
Old 12-27-2001, 10:36 AM   #5
Scooby Newbie
Member#: 3409
Join Date: Jan 2001
Chapter/Region: NWIC
Location: Oly
98 My FMIC
Is bigger than yours.


Isn't that funny about the rear diff? Torque spec calls for ~32 ft-lbs, but it takes several hundred to break it free. Grr. I recommend jacking the rear way up in the air, breaking the drain/fill free (but not removing), then jacking the front up. Drain the rear with the front way up in the air, then break the front free, drop the car level, plug and fill the rear, and drain the front while level. Plug & fill the front. I removed my Cobb and just used the long pointy bottles to fill, but that was a MAJOR pain, and I spilled gear oil on my exhaust. Now my car stinks. Some day it will go away. After I finished I remembered the siphon hose I bought for such an occasion. Next time...
I used Mobil1 75W-90 for both. Ran me about $35-40.
CosmoTheCat is offline   Reply With Quote

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 Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
STi Trans. & Diff. Fluid Change i_drank_what Service & Maintenance 83 08-29-2017 03:53 AM
Tranny & diff fluid changes are cake R_W Service & Maintenance 54 04-16-2009 09:47 AM
Problem after 5 MT & Rear Diff Fluid Change jjbehren Newbies & FAQs 27 03-18-2008 02:20 PM
about to do a 6mt tranny and diff fluid change...where to get fluid? OneArmedScissor Texas Impreza Club Forum -- TXIC 9 10-21-2007 01:07 AM
newbie question: Front diff and tranny fluid change ricerocket123 Transmission (AT/MT) & Driveline 5 09-18-2007 03:18 PM

All times are GMT -4. The time now is 04:30 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.