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bigboy
07-08-2009, 03:00 PM
Well my New upgraded rear diff was delivered today and i was wondering what fluid to put in it..

OEM Subaru?

any other type of fluid out there that people have used?

Obsidian06
07-08-2009, 03:13 PM
Royal Purple 75w-90

DIGA_DELAY
07-08-2009, 04:06 PM
Royal Purple 75w-90

That's what the previous owner put in my wagon.

cseaman
07-08-2009, 04:59 PM
Royal Purple 75w-90

This is what I run as well.

KSwrxWAGON
07-08-2009, 05:04 PM
Amsoil Severe Gear 75w-90! :lol:

NoAffiliationSTi
07-08-2009, 08:29 PM
or why not Redline...lol might as well get all of the brands up here

Obsidian06
07-08-2009, 09:02 PM
To be honest, any good quality synthetic gear oil will do. Some are going to last longer than others, but when you change your transmission and diff oil every 15k miles like I do, it really doesn't matter what good brand of oil you use.

bigboy
07-09-2009, 01:37 AM
well i went ahead and got OEM Fluid...i may try one of the others in the future..but it was easier to get the OEM stuff

WooT....07 STI REAR end goin in this weekend!

paper_tiger
07-09-2009, 08:38 AM
Royal Purple 75w-90

This is what I use in the Miata. Royal Purple is much easier to get around KC than Red Line.

matt25sti
07-09-2009, 10:00 AM
chris, i wanna convert to amsoil soon so have some in stock for an 06 wrx tranny and rear diff :lol

KSwrxWAGON
07-09-2009, 10:59 AM
chris, i wanna convert to amsoil soon so have some in stock for an 06 wrx tranny and rear diff :lol

I have several cases...should have some in stock when you're ready! I'm selling it to KCSubaru people for CHEAP, too. :P

Chad
07-09-2009, 11:13 AM
Royal Purple 75w-90

This is what I use in the Miata. Royal Purple is much easier to get around KC than Red Line.

It's just as easy to come by, we actually stock the redline here at the shop. 75w-90, MT90, 75W-90NS, and Heavy Duty Shockproof.

matt25sti
07-09-2009, 11:51 AM
Royal Purple 75w-90

This is what I use in the Miata. Royal Purple is much easier to get around KC than Red Line.

It's just as easy to come by, we actually stock the redline here at the shop. 75w-90, MT90, 75W-90NS, and Heavy Duty Shockproof.


Wish you had that a month or so ago when I stopped by there. After waiting in the show room for 10 minutes I went into the shop and was told you don't carry it?

Chad
07-09-2009, 12:17 PM
Interesting, we've had redline in the case for months on end.

Which specific item were you looking for in particular?

With everybody out in the shop or office by the dyno, we don't alway's know when someone walks in the door. Especially if we have the door propped open for airflow. Most of the time people just walk back in the shop.

Let me or us know if we could help you out in the future.

Take Care

NoAffiliationSTi
07-09-2009, 12:49 PM
lol guess i should have mentioned that before as well chad on oils to get it from you

paper_tiger
07-09-2009, 03:17 PM
It's just as easy to come by, we actually stock the redline here at the shop. 75w-90, MT90, 75W-90NS, and Heavy Duty Shockproof.

Hmm good to know, I got tired of mail ordering the Red Line and was able to find RP at any NAPA and O'Reilly's all over town. I will have to pick some up for the Outback when I am in there for a tint job (which I still need to schedule).

scooby2.5
10-13-2010, 11:27 PM
I know this is a late post to this subject but I would use the Subaru Extra S fluid. www.fredbeansparts.com (http://www.fredbeansparts.com)

Its a synthetic made by subaru and over at the LGT community where many have tried a lot of different ones in the tranny and rear diff, most people including myself swear by this stuff. In fact I purchased a 5 gallon bucket and been changing mine every year or year and a half. I know thats more often than most but I am a bit anal that way. I drive about 25-30000 a year so I like to keep my cars really PM'd.