Welcome to the North American Subaru Impreza Owners Club Monday March 8, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 12-10-2001, 12:15 PM   #1
sorny
Scooby Newbie
 
Member#: 10116
Join Date: Sep 2001
Location: Oneida, TN
Vehicle:
2002 WRX Sedan
Aspen White

Default Tranny fluid in WRX 5-speed

I was planning on changing my WRX tranny fluid this weekend and was wondering if any type of 75w90 would be fine? I want to go with something a little thicker then the brown water thats in it now. Might go with redline or something.
* Registered users of the site do not see these ads.
sorny is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-10-2001, 12:19 PM   #2
Obsidian
Scooby Specialist
 
Member#: 5627
Join Date: Apr 2001
Chapter/Region: South East
Location: Charlotte, NC
Vehicle:
06 WRX STi
Black

Default

http://www.cobbtuning.com/tech/gearoil/index.html

If it means anythign I run the MT-90 in mine.
Obsidian is offline   Reply With Quote
Old 12-10-2001, 12:22 PM   #3
sorny
Scooby Newbie
 
Member#: 10116
Join Date: Sep 2001
Location: Oneida, TN
Vehicle:
2002 WRX Sedan
Aspen White

Default

Thanks. BTW, how many quarts does the stock WRX tranny hold?
sorny is offline   Reply With Quote
Old 12-10-2001, 01:34 PM   #4
aov
Scooby Specialist
 
Member#: 7193
Join Date: Jun 2001
Location: Austin, TX
Vehicle:
MY02 WRX
Blue

Default

Tranny holds 3.7qts I believe. If you look in the Transmission forum you will find much more info on this. There are some oils that work better than others so do a search and find out what will work best for you.

I just changed mine; www.f1carsets.com/wrx (You might want to get something else than Mobil1!)

-anders
aov is offline   Reply With Quote
Old 12-10-2001, 01:46 PM   #5
sorny
Scooby Newbie
 
Member#: 10116
Join Date: Sep 2001
Location: Oneida, TN
Vehicle:
2002 WRX Sedan
Aspen White

Default

Thanks for the webpage, that really helps. I think it IS 3.7 qts, because I read that somewhere else. What's wrong with Mobil 1? I was probably going to go cheap, no use in paying $40 for RedLine right now. Do I have to change the rear diff. fluid too?
sorny is offline   Reply With Quote
Old 12-10-2001, 03:43 PM   #6
GDA
Scooby Specialist
 
Member#: 4324
Join Date: Feb 2001
Location: (925) CA
Vehicle:
02 GDA
Platinum

Default

for the trans: 3.7qts
rear diff: .7qts

i used 75w90ns in the trans and
i used 75w90 in the rear diff.

both torque to about 30 ft/lbs give or take.


I dont have any issues with my trans or rear diff as of yet, and ive had it in there for about 9,000 miles.

good luck

EJ20WRX
GDA is offline   Reply With Quote
Old 12-10-2001, 04:10 PM   #7
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 [email protected]
netcom.com

Default Re: Tranny fluid in WRX 5-speed

Quote:
Originally posted by sorny
I was planning on changing my WRX tranny fluid this weekend and was wondering if any type of 75w90 would be fine? I want to go with something a little thicker then the brown water thats in it now. Might go with redline or something.
I used Royal purple in the tranny and rear diff. Been in there for about 2000 miles now. Tranny does not make the decel rattle box noise at all and is much easier to shift. Gear shift lever almost seems to light now. Big difference. Royal purple has a Shock addative but it is safe to use in the rear diff. Available at any Napa auto parts store. Get 5 Q's and you will have plenty. Tranny takes 3.5 and diff took about .6 with some run off.

Tranny is easy. Drop the lower bolt and drain fluid.

Clean metal shavings off of magnetic drain plug.

Insert hose into dip stick and pour in about .5 Q's. This lets clean fluid remove any metal shavings that may be sitting on the bottom of the tranny case.

Put drain plug back in.

Fill with 3 q's and check. Start car and let idle for a moment. Recheck and top off. Mine took 3.5 total.

Rear is easy.. Remove bottom plug.

Remove top plug.

Squirt oil in to clean out old oil and metal.

Put the bottom plug in. fill through top plug until there is run off.

Put top plug in and TRQ.

HTH

CT
AZScoobie is offline   Reply With Quote
Old 12-11-2001, 01:43 PM   #8
Oldnslow
Scooby Specialist
 
Member#: 4572
Join Date: Mar 2001
Location: Seattle,Washington,USA
Vehicle:
2015 WRX
WRB

Default

Redline 75w90ns works well in the tranny and diff. I don't think you can use MT-90 as it is only GL-4 rated, not the required GL-5.
Oldnslow is offline   Reply With Quote
Old 12-11-2001, 05:08 PM   #9
titsataki
Scooby Specialist
 
Member#: 4402
Join Date: Feb 2001
Chapter/Region: NESIC
Location: USA
Default

Redline lubricants.

shockproof lightweight rear.

75/90 NS in the tranny....

People like diff theings for diff reasons thou....

Cheers

T.
titsataki is offline   Reply With Quote
Old 12-11-2001, 05:11 PM   #10
sorny
Scooby Newbie
 
Member#: 10116
Join Date: Sep 2001
Location: Oneida, TN
Vehicle:
2002 WRX Sedan
Aspen White

Default

What should I do if I just go with a plain old normal Mobil 1 or whatever instead of Redline? Just can't afford $8/bottle+shipping now.
sorny is offline   Reply With Quote
Old 12-11-2001, 06:22 PM   #11
titsataki
Scooby Specialist
 
Member#: 4402
Join Date: Feb 2001
Chapter/Region: NESIC
Location: USA
Default

mobil 1 is a good lubricant.
IMHO Redline is better.

Actually I find locally at about $6 a quart. Mobil 1 is around $4.50. I would say wait a month and go for the Redline or get 75/90 Mobil1 and be done with it.

Cheers

T.

Last edited by titsataki; 12-11-2001 at 09:13 PM.
titsataki is offline   Reply With Quote
Old 12-15-2001, 09:55 PM   #12
Corn-Picker
Scooby Specialist
 
Member#: 8679
Join Date: Jul 2001
Location: Morgantown, WV
Vehicle:
2010 The most hated
vehicle on the internets

Default

Ok, I'm just starting to buy some synthetic gear lubricant and I'm cofused on a few things. If I go with Mobil 1 75W-90 am ever going to have to change the fluid again? My local Advanced Auto charges $7.99 for a quart of Mobil 1 75W-90, I guess that's a little pricey from what I've heard in this thread?

If I go with the Royal Purple, will I ever have to change that?

I've read directions on how to change the tranny (5 MT) and rear differential fluid, but what about the center and front differential, or does the tranny exchange take care of that?

Thanks a ton, you guys are great


Next time I work on my car, its getting:

Oil change
Tranny fluid and rear diff fluid change
SS brake lines
Spoiler
Samco silicone intercooler hoses
Lightweight alternator pulley


I have all the stuff I need (except the tranny fluid), and it's just a matter of finding time to get it all installed
Corn-Picker is offline   Reply With Quote
Old 12-16-2001, 02:46 AM   #13
AZScoobie
Scooby Guru
 
Member#: 8785
Join Date: Jul 2001
Chapter/Region: SWIC
Vehicle:
02 [email protected]
netcom.com

Default

Quote:
Originally posted by Corn-Picker
Ok, I'm just starting to buy some synthetic gear lubricant and I'm cofused on a few things. If I go with Mobil 1 75W-90 am ever going to have to change the fluid again? My local Advanced Auto charges $7.99 for a quart of Mobil 1 75W-90, I guess that's a little pricey from what I've heard in this thread?

If I go with the Royal Purple, will I ever have to change that?

I've read directions on how to change the tranny (5 MT) and rear differential fluid, but what about the center and front differential, or does the tranny exchange take care of that?

Thanks a ton, you guys are great


Next time I work on my car, its getting:

Oil change
Tranny fluid and rear diff fluid change
SS brake lines
Spoiler
Samco silicone intercooler hoses
Lightweight alternator pulley


I have all the stuff I need (except the tranny fluid), and it's just a matter of finding time to get it all installed
The tranny change takes care of the diff and transfer...

Just use any high quality 75/90 oil that is rated at GL5+. I used the Royal purple as I road race.

Will you have to change it again? Yes... I road race the car and I plan on changing the rear diff and tranny every 6000 miles. Overkill? Probably. I checked the tranny oil after a race session and had smoke come out of the dipstick tube. I think its a good idea and worth the $45. The tranny fluid gets hot. Very hot.

CT
AZScoobie is offline   Reply With Quote
Old 12-16-2001, 05:26 AM   #14
chileewili
Scooby Newbie
 
Member#: 13080
Join Date: Dec 2001
Location: Santa Barbara, CA
Vehicle:
2002 wrx waggy

Lightbulb

You might want to check out Amsoil. They might seem a little 'ghetto' in terms of their website, but that's what happens when you spend all the money on R&D rather than marketing. generally, you can find a local dealer of Amsoil, check their website/links and the prices are generally about the price of mobil1 (at least in So. Cal, mobil1 ~$5/qt). But what ever oil you use, as long as it's a reputable synthetic, i'm sure it will be fine. and yes, even with synthetic in the gear box you'll have to change it (less often, but still do). -in my bimmer i change it about every 15k, b/c that's when I start to notice that the shifting isn't like butter anymore.

ohyea, just a good habit/tip, always remove the FILLER plug first when draining any fluid. Sometimes (and it does happen), people will drain out the fluid without removing the filler plug, and then when their car is dry, they see that they weren't able to get filler plug off, leaving them with a dry, useless car. It's just good habit and it'll pay-off when your car get older.
chileewili is offline   Reply With Quote
Old 12-16-2001, 10:58 AM   #15
d00f
Scooby Specialist
 
Member#: 6000
Join Date: Apr 2001
Location: Ottawa, Canada
Vehicle:
2000 GC8 STi V4 swap
BRP

Default

FYI: The centre diff shares fluid with the transmission so there really isn't such a thing as changing your centre diff or front diff fluid in addition to changing the tranny fluid.

-Michael
d00f is offline   Reply With Quote
Old 12-16-2001, 10:16 PM   #16
At7000ft
Scooby Newbie
 
Member#: 4136
Join Date: Feb 2001
Location: Castle Rock Colorado
Vehicle:
02 WRX
Silver

Default Oil to synthetic and back

With ease of shifting (particularly downshifting) my primary concern I first tried Amsoil in my tranny. This resulted in more grinding on downshifts so I tried 75% Redline 75-90 and 25% 75-140. This was better whan the Amsoil but not as good as the stuff the car came with. So I have come full circle back to plain old Valvoline 80-90 gear oil. Anybody want to buy 3.7 quarts of slightly used Redline? Its only got 500 miles on it
At7000ft is offline   Reply With Quote
Old 12-17-2001, 09:55 AM   #17
sorny
Scooby Newbie
 
Member#: 10116
Join Date: Sep 2001
Location: Oneida, TN
Vehicle:
2002 WRX Sedan
Aspen White

Default Re: Oil to synthetic and back

Quote:
Originally posted by At7000ft
So I have come full circle back to plain old Valvoline 80-90 gear oil.
I finally changed the fluid yesterday and was at Advance Auto trying to find some nice 75w90 but couldn't find anything but the cheap stuff, so I got the Valvoline 80w90 and used it. Now i can shift into 1st at 12MPH instead of 8MPH Changing the fluid was easier then I thought, but refilling it was the hard part. I couldn't get my funnel it fit under the intercooler, so I got a piece of 5/16" fuel hose (unused), about 12" long, and pushed it on to the end of the little squirter on the valvoline bottle. Worked pretty good, but there was no air getting in, so as soon as I turned the bottle up I took a knife and stabbed the top so it'd flow faster. Car does shift a little smoother now and it actually reaches the fill line
sorny is offline   Reply With Quote
Old 08-05-2020, 08:00 PM   #18
Paustin055
Scooby Newbie
 
Member#: 517328
Join Date: Aug 2020
Default

Quote:
Originally Posted by AZScoobie View Post
I used Royal purple in the tranny and rear diff. Been in there for about 2000 miles now. Tranny does not make the decel rattle box noise at all and is much easier to shift. Gear shift lever almost seems to light now. Big difference. Royal purple has a Shock addative but it is safe to use in the rear diff. Available at any Napa auto parts store. Get 5 Q's and you will have plenty. Tranny takes 3.5 and diff took about .6 with some run off.

Tranny is easy. Drop the lower bolt and drain fluid.

Clean metal shavings off of magnetic drain plug.

Insert hose into dip stick and pour in about .5 Q's. This lets clean fluid remove any metal shavings that may be sitting on the bottom of the tranny case.

Put drain plug back in.

Fill with 3 q's and check. Start car and let idle for a moment. Recheck and top off. Mine took 3.5 total.

Rear is easy.. Remove bottom plug.

Remove top plug.

Squirt oil in to clean out old oil and metal.

Put the bottom plug in. fill through top plug until there is run off.

Put top plug in and TRQ.

HTH

CT
Usually you wanna take your fill plug out before your drain plug. Just a good habit in case you drain it and then mess up the fill plug and can't fill it.
Paustin055 is offline   Reply With Quote
Old 08-06-2020, 11:37 AM   #19
Samurai Jack
Scooby Guru
 
Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

Default

Trying to just get a post count?
You replied to a 19 year old post. He last posted in 2008 so I'm sure he is no longer listening.

At least pick current posts.
Samurai Jack is offline   Reply With Quote
Old 08-09-2020, 04:51 PM   #20
Max Capacity
Scooby Specialist
 
Member#: 149347
Join Date: May 2007
Chapter/Region: NESIC
Location: Tolland, CT
Vehicle:
05 LGT,09 SpecB
Black/silver

Default

Quote:
Originally Posted by Samurai Jack View Post
Trying to just get a post count?
You replied to a 19 year old post. He last posted in 2008 so I'm sure he is no longer listening.

At least pick current posts.
Still a good lesson to others who may not know why you remove the fill plug first.

Max Capacity is offline   Reply With Quote
Old 10-30-2020, 03:14 PM   #21
BakeyWakey
Scooby Newbie
 
Member#: 511013
Join Date: Jan 2020
Chapter/Region: NWIC
Location: Seattle area
Vehicle:
2004 WRX
Grey

Default

Quote:
Originally Posted by Max Capacity View Post
Still a good lesson to others who may not know why you remove the fill plug first.


Exactly. Nice tip ***128077;
BakeyWakey is offline   Reply With Quote
Old 11-11-2020, 08:06 PM   #22
hybrid gti 2
Scooby Guru
 
Member#: 67004
Join Date: Jul 2004
Chapter/Region: SCIC
Location: (818) 300k+ ej205 ppg 5mt
Vehicle:
02 vf30 pnp wagon
silver and cf

Default

Redline Lightweight Shockproof. But just be careful and money shift is totally possible. As this stuff is super slick it slides through the synchros real easy into any gear. Whatever you do don't mix stuff, specially Uncle Scott's Cocktail. When in doubt do a oil analysis and do what they recommend.
hybrid gti 2 is offline   Reply With Quote
Old 11-12-2020, 11:14 AM   #23
Samurai Jack
Scooby Guru
 
Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

Default

Quote:
Originally Posted by hybrid gti 2 View Post
Redline Lightweight Shockproof. But just be careful and money shift is totally possible.
Only an idiot does a " money shift " unless they just don't give a crap about their transmission.

Quote:
Originally Posted by hybrid gti 2
Whatever you do don't mix stuff, specially Uncle Scott's Cocktail.
" Scotty's Cocktail " was a bunch of hooey from Day 1. He just threw stuff together based on zero knowledge and people were stupid enough to use it and ruined their transmissions. That came up in a number of posts in the past.

Similar to the days when some Medicine Man would hawk his " magic elixer " to " cure whatever ails you " when it was just something he threw together in the back of his wagon

And, you are wrong on " mixing ". All depends on what you are mixing together.
In a 5MT, and similar transmissions that do not use a pump, a 50/50 mix of Redline Lightweight Shockproof and Redline 75W90NS works very well.
Samurai Jack is offline   Reply With Quote
Old 12-24-2020, 11:18 PM   #24
datbluehusky
Scooby Newbie
 
Member#: 521196
Join Date: Dec 2020
Chapter/Region: E. Canada
Location: Toronto
Vehicle:
2002 WRX
WRB

Default

Quote:
Originally Posted by Samurai Jack View Post
" Scotty's Cocktail " was a bunch of hooey from Day 1. He just threw stuff together based on zero knowledge and people were stupid enough to use it and ruined their transmissions. That came up in a number of posts in the past.

Umm ive been running scottys for over 7 years, put over 120,000km on my 2002 wrx since and car has total of 420,000km. Ive done trips from Toronto to Chicago for over 9-10 our drives and other 6 hour drives etc to pittburg almost every year with NO problems. The tranny through has center diff bearing noise but thats expected for a high mile tranny. Uncle scotts saved my trans and fixed my 3rd gear grind completely and issues going into 1st gear. Ive done 2 changes since and I swear by the mix. The car also has stage 2 tune at 16psi for past 6 years.


Most time ppl posting how their tranny is destroyed by the mix is ppl that had their trannys on the last last legs and then put the mix in then shortly after going bad and blaming on the mix.
datbluehusky is offline   Reply With Quote
Old 12-26-2020, 12:07 PM   #25
Samurai Jack
Scooby Guru
 
Member#: 21145
Join Date: Jul 2002
Chapter/Region: NESIC
Location: Not in my own time
Vehicle:
2002 Enemy of Aku

Default

Quote:
Originally Posted by datbluehusky View Post
Most time ppl posting how their tranny is destroyed by the mix is ppl that had their trannys on the last last legs and then put the mix in then shortly after going bad and blaming on the mix.
While there is * some * truth to that statement, I doubt that is true in most cases.
Far too many posts about how the use of Scotty's Cocktail resulted in transmission damage.

Now, people being what they are, stupid is as stupid does so that may be why all of the damage reports. Just look at all the posts of people's engines blowing up and blaming Subaru, when in truth these people did it to themselves, which you could track back to their other posts about how they treat their cars

Personally, I found far too many of Uncle Scotty's statements in general to be a bunch of hooey he could not back up when questioned directly. Given that, I personally would not have trusted anything he came up with in his garage.

Glad to hear you never glad any issues.
Samurai Jack 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
KAAZ gearset in WRX 5 speed Lachute Performance Drivetrain 8 03-12-2009 03:49 PM
FS in Canada: 5 speed Tranny parkes Drivetrain 0 07-25-2008 02:55 AM
2004 WRX 5 speed tranny in GREAT SHAPE!!! pics and video!! WRXINTX Drivetrain 10 09-21-2007 04:55 PM
Help-Need a WRX 5 speed tranny! okiedude Southern California Impreza Club Forum -- SCIC 8 08-25-2003 05:34 PM
Old school wrx 5 speed tranny strength Aspen_2.5RS Transmission (AT/MT) & Driveline 4 11-16-2002 01:09 PM

All times are GMT -4. The time now is 09:08 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.