Welcome to the North American Subaru Impreza Owners Club Monday October 20, 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 04-14-2009, 12:50 AM   #1
ahhhh
*** Banned ***
 
Member#: 207726
Join Date: Apr 2009
Chapter/Region: MAIC
Default Motul or Amsoil Gear Oil for the 6mt and STi Diff?

I have read the gear oil faq's, unabomber's threads and just got done searching nasioc and iwsti. Trying to figure out what would be the better route to go.... Please don't post anything about the 5mt and wrx diff, this is for a 2004 STI...

Was thinking between Amsoil or Motul, also see more threads about Motul problems vs hardly any using Amsoil. This is what I was looking at.

Amsoil

Severe gear "rear diff"
http://www.amsoil.com/storefront/svg.aspx?zo=515729
Slip Lock "rear diff"
https://www.amsoil.com/storefront/ada.aspx
Long Life "tranny"
http://www.amsoil.com/storefront/fgr.aspx?zo=515729

Motul

6MT Option A "Motul 75/90 and Motul 90PA"
http://www.fastwrx.com/trsekit.html

Does the Motul 90PA require a additive?
* Registered users of the site do not see these ads.
ahhhh is offline   Reply With Quote
Old 04-14-2009, 09:30 AM   #2
Unabomber
Big Ron
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

You can ask Jesus, Mohammad, and the Dahli Llama and you won't get the right answer as there is no right answer. The Maintenance FAQ states the popular oils, use one of them. You are MAIC, so your best best bet is to use fastwrx.com as they are local and local advice is the best. Call Dan and axe him.
Unabomber is offline   Reply With Quote
Old 04-14-2009, 02:19 PM   #3
DS1
Vendor
 
Member#: 111780
Join Date: Apr 2006
Chapter/Region: MWSOC
Location: Schaumburg, IL
Default

The 90PA has the additive in it already. You can use the Motul Gear 300 in the front and the back without any worries.

-Dylan @ DS1
DS1 is offline   Reply With Quote
Old 04-15-2009, 02:43 AM   #4
ahhhh
*** Banned ***
 
Member#: 207726
Join Date: Apr 2009
Chapter/Region: MAIC
Default

Well I searched some more and still found more horror stories using Motul. Think I will use the Amsoil gear oil. Already using Amsoil 10w-30, larger EA013 Amsoil Synthetic Media Oil Filter. Might as well go all Amsoil in 3K miles which will put all fluid changes on 100K. Of course I might as well get a Amsoil filter and sock for the Aps intake, snag some Amsoil Synthetic ATF for the power steering and change the plugs.

How much of the 4oz bottle of Slip Lock is supposed to be added to the rear?
ahhhh is offline   Reply With Quote
Old 04-15-2009, 12:42 PM   #5
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT

Default

Go with the Severe Gear in the front. No idea on the Slip Lock.

-Dennis
bluesubie is offline   Reply With Quote
Old 04-16-2009, 01:14 AM   #6
RonJitsu
Scooby Specialist
 
Member#: 132301
Join Date: Nov 2006
Chapter/Region: Tri-State
Location: Central NJ
Vehicle:
07 WRX Limited 6MT
20G - SWP - SOLD

Default

I've put Severe gear 75w90 or 75w110 in several Subaru rears. I've never used / needed the Slip Lock additive (in a Subaru).

Even in most vehicles that do specify the need for an additive, when using Severe Gear, the additive was not needed. I've only had to add it in one case, which was my brothers truck that tows a heavy trailer every day.
RonJitsu is offline   Reply With Quote
Old 04-16-2009, 01:51 AM   #7
Hyper
Scooby Guru
 
Member#: 15822
Join Date: Feb 2002
Location: MOCKBA
Vehicle:
1999 WRB GM6
2.12cc V9 Type RA

Default

if your rear diff is plated, like spec c, I would highly recomend using PA90
Hyper 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
Differential gear oil for the WRX rexman2002 Service & Maintenance 34 06-20-2009 05:49 PM
synthetic or dino gear oil for tranny Sir Punk Newbies & FAQs 8 03-11-2009 07:59 PM
Oil capacity and type for 6mt and rear diff? serious Transmission (AT/MT) & Driveline 2 05-28-2004 08:14 PM
Perrin exhaust systems for the WRX and STi are in!!!! vividracing Vendor 'For Sale' Classifieds 8 09-24-2003 03:01 PM
Who can't wait for the EVO and STi info to disapear from the board? Eric SS Off-Topic 18 01-07-2003 10:02 AM


All times are GMT -4. The time now is 07:24 PM.


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.