Welcome to the North American Subaru Impreza Owners Club Saturday July 2, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Subaru Models > Legacy Forum

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. 
Reply
 
Thread Tools Display Modes
Old 01-29-2007, 06:02 PM   #1
runninstrong
Scooby Specialist
 
Member#: 121474
Join Date: Jul 2006
Chapter/Region: NESIC
Location: Middle East of CT
Vehicle:
1991 SS & 2013 STi
Red & Blue

Default Front Differential ?

Just a general question, I'm not 100% sure whats in a 95 auto front diff. Is it gear oil or ATF? It smells an awful lot like gear oil, but I've read around and saw that its ATF maybe? Its really black/dark gray, which I don't think it matters what it is, thats a key sign that its time to change it.
* Registered users of the site do not see these ads.
runninstrong is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-29-2007, 07:20 PM   #2
Jonathan
Scooby Guru
 
Member#: 4021
Join Date: Feb 2001
Chapter/Region: NESIC
Location: Natick, MA USA
Vehicle:
1999 Legacy GT Ltd
Quick Silver Metallic

Default

The kind and "knowledgeble" folks at Jiffy-Lube explained to me last week end that my '96 Legacy "L" AWD w/4EAT Automatic uses ATF for the Transmission, and 80-90 wt Gear Oil for the front differential. Seeing as I always assumed that the Transmission, AWD clutch packs/"transfer case", and the Front differential were all one unit running in ATF, and they politely explained to me that they arent - and showed me that they are in fact different - I let them change the Front Differential fluid.
Jonathan is offline   Reply With Quote
Old 01-29-2007, 08:07 PM   #3
xcntrk75
Scooby Specialist
 
Member#: 60224
Join Date: Apr 2004
Chapter/Region: MAIC
Location: NOVA
Vehicle:
2008 FXT Sports 2.5
Dark Grey Metallic

Default

MT: uses 75W-90W gear oil for both the transmission, center-diff, and front differential (rear too for that matter). The front diff lubrication is supplied from the transmission supply so you only fill/drain in one place.

AT: uses ATF fluid for the transmission only. Then has a separate internal reservoir for the front differential. You drain/fill the ATF tranny separately from the front-diff. Not sure about the center-diff..(?)
xcntrk75 is offline   Reply With Quote
Old 01-29-2007, 10:24 PM   #4
Wiscon_Mark
Scooby Guru
 
Member#: 94945
Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Plover, WI
Vehicle:
2012 Impreza
Sport Limited DGM

Default

The center diff uses gear oil? I guess there are some parts in there that need oiling, I was just thinking it was just the viscous fluid.
Wiscon_Mark is offline   Reply With Quote
Old 01-29-2007, 10:26 PM   #5
runninstrong
Scooby Specialist
 
Member#: 121474
Join Date: Jul 2006
Chapter/Region: NESIC
Location: Middle East of CT
Vehicle:
1991 SS & 2013 STi
Red & Blue

Default

I'm pretty sure the auto center you cannot replace the fluid.
Thanks, I KNEW it was gear oil.
runninstrong is offline   Reply With Quote
Old 01-30-2007, 11:39 AM   #6
IronMonkeyL255
Scooby Specialist
 
Member#: 38120
Join Date: Jun 2003
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
1991 Rio Red
Legacy Turbo

Default

You can't do jack about the center diff. The front diff uses the same gear oil as the rear diff. It drains from the plug just a bit behind the engine x-member. You fill it through the dipstick tube (really more like a hole, come to think of it) on the passenger side. A long, flexible funnel helps a ton for this.
IronMonkeyL255 is offline   Reply With Quote
Old 01-30-2007, 12:52 PM   #7
bugeye829
Scooby Specialist
 
Member#: 81995
Join Date: Feb 2005
Chapter/Region: BAIC
Location: San Francisco
Vehicle:
2008 Impreza
02 WRX 247k RIP

Default

front diff uses gear oil, seperate from the trans fluid. i'm not sure if its the same as the rear diff, i thought it was slightly different.. like 80w-90 vs 75w90 or something like that but look it up in the manual first to check.
drain underneath and fill from above, the dipstick is on the opposite side from the auto trans dipstick as mentioned above. i believe it takes just 1 quart but can't remember exactly now.
bugeye829 is offline   Reply With Quote
Old 01-30-2007, 03:23 PM   #8
flanders
Scooby Specialist
 
Member#: 76382
Join Date: Dec 2004
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
2000 BH
BP Wannabe

Default

This should be covered in the manual, not that I read them myself
flanders is offline   Reply With Quote
Old 01-30-2007, 04:50 PM   #9
runninstrong
Scooby Specialist
 
Member#: 121474
Join Date: Jul 2006
Chapter/Region: NESIC
Location: Middle East of CT
Vehicle:
1991 SS & 2013 STi
Red & Blue

Default

Quote:
Originally Posted by flanders View Post
This should be covered in the manual, not that I read them myself
Actually, all it says is front differential gear oil. Not very clear if you ask me.
runninstrong is offline   Reply With Quote
Old 01-30-2007, 04:55 PM   #10
IronMonkeyL255
Scooby Specialist
 
Member#: 38120
Join Date: Jun 2003
Chapter/Region: South East
Location: Greenville, SC
Vehicle:
1991 Rio Red
Legacy Turbo

Default

When I ordered my Motul from a local dealership, they gave me the same stuff for front and rear diffs.

Also, if you have a lsd rear diff, you don't need to add anything to the fluid. all the fluid for the lsd mechanism is internal and un-changeable. The Haynes manual says you need an additive, but you don't.
IronMonkeyL255 is offline   Reply With Quote
Reply

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
Does the AT have a front differential? V6 Transmission (AT/MT) & Driveline 3 05-01-2002 06:36 PM
Front differential oil = transmission oil? WRXVII Service & Maintenance 8 03-19-2002 11:46 PM
(4EAT) Front Differential Dipstick doesn't stay in place remarcable Transmission (AT/MT) & Driveline 1 12-15-2001 04:01 PM
Where's the fill point for front differential on AT cars? remarcable Transmission (AT/MT) & Driveline 7 12-11-2001 09:35 PM
Anyone have a KAAZ 1.5 way front differential? lo0pback Brakes, Steering & Suspension 13 02-20-2001 12:44 AM

All times are GMT -4. The time now is 06:59 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.