Welcome to the North American Subaru Impreza Owners Club Monday April 21, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Transmission (AT/MT) & Driveline

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 06-27-2004, 11:07 PM   #1
slack20123
Scooby Newbie
 
Member#: 30447
Join Date: Nov 2002
Location: Davis, CA
Vehicle:
2002 WRX
PSM

Question 4EAT What Front Diff Oil?

Anyone know what oil is best for the front diff? Looking at the service manual it recommends 80W-90, which kinda rules out Mobil1, since it's 75W-90. Also, any problems going to synthetic? I've got mobil1 synthetic ATF, and planning on Mobil1 75W-90 in the rear diff.
* Registered users of the site do not see these ads.
slack20123 is offline   Reply With Quote
Old 06-28-2004, 09:00 AM   #2
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT

Default

M1 75W90 will be fine. The brand of synthetic front diff oil in an auto isn't as big of an issue as with a manual since you don't have to worry about synchros.

-Dennis

Last edited by bluesubie; 06-28-2004 at 03:35 PM.
bluesubie is offline   Reply With Quote
Old 06-28-2004, 02:16 PM   #3
Crashton
Scooby Newbie
 
Member#: 3808
Join Date: Jan 2001
Location: Westerville, OH , USA
Vehicle:
2005 Forester XT!!!
Crystal Gray Metallic

Subaru Stars

My 4eat has had Mobile One in there for the last 60,000 miles & hasn't complained yet.
Crashton is offline   Reply With Quote
Old 06-28-2004, 02:49 PM   #4
Hayes
Scooby Specialist
 
Member#: 11808
Join Date: Oct 2001
Location: Cape Coral,FL
Default

Been running Mobil1 75-90 GL5 for 70,000 miles in my Forester and all is very well thank you.
Hayes is offline   Reply With Quote
Old 06-28-2004, 03:24 PM   #5
avk
Scooby Specialist
 
Member#: 17252
Join Date: Apr 2002
Chapter/Region: Tri-State
Location: NJ
Vehicle:
'06 WX8
59E

Default

bluesubie: With AT (at least w/o VTD), the front. diff. gears should be more stressed than with MT, because of different torque split.
avk is offline   Reply With Quote
Old 06-28-2004, 03:38 PM   #6
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT

Default

Quote:
Originally posted by avk
bluesubie: With AT (at least w/o VTD), the front. diff. gears should be more stressed than with MT, because of different torque split.
I edited my post. Sound better?

Then again, one might argue that the MT is more stressed because the front diff is inside the tranny. But we'll leave that for another thread.

-Dennis
bluesubie is offline   Reply With Quote
Old 06-28-2004, 08:58 PM   #7
Hayes
Scooby Specialist
 
Member#: 11808
Join Date: Oct 2001
Location: Cape Coral,FL
Default

Torque converter softens the shift shock so the front differental has less shock load. All this is interesting to keep us thinking but, is probly a non issue for those who know how to shift a manual correctly.
Hayes is offline   Reply With Quote
Old 06-28-2004, 09:34 PM   #8
avk
Scooby Specialist
 
Member#: 17252
Join Date: Apr 2002
Chapter/Region: Tri-State
Location: NJ
Vehicle:
'06 WX8
59E

Default

Quote:
Originally posted by bluesubie
I edited my post. Sound better?
Ah yes, but now my previous reply makes no sense!
Hayes: I agree those not shifting manual correctly should be more careful about oil.
avk 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
Front diff oil??? lotarg Service & Maintenance 4 08-21-2009 03:29 PM
Just replaced my front diff oil and now getting a grind in first kbcr3 Service & Maintenance 9 06-18-2009 03:29 AM
Front Diff Oil in MY98 Forester? SubaruImpreza_power Forester Forum 11 06-12-2003 11:30 AM
WRX 4EAT Redline Tranny/Diff Oils Needed AVATAR-X Transmission (AT/MT) & Driveline 4 03-29-2003 01:37 PM
4EAT LSD front diff Joe Hogan Factory 2.0L Turbo Powertrain 3 05-01-2001 10:02 AM


All times are GMT -4. The time now is 01:54 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.