[005sti]

Originally Posted by 005sti

i decided not to after i took it out to drop the fluid because it was pretty hard to remove and 33 ftlbs made the bolt feel pretty damned snug. i didn't want to be stuck trying to remove it next time. i'll post here if i notice any leaks

no leaks since the change over 1 week ago, although i checked my tranny again today and it was a quart low. don't know why it read full before. oh, well. just topped it off.

[hulk252]

Nice thread. lots of good info.

[effect]

dont remember who said it that Rolal Purple does not make GL-5 approved Oil.
for the Rear Diff.. here's a link to their site..

http://www.royalpurple.com/prodsa/mgeara.html

[S1MPSONS]

Originally Posted by Chris05STi

Anyone know where I can pick up Motul 90PA? I heard their stuff is great and want to change the rest out since I am using it for the brake system. Motul 90PA is for the Rear diff correct? What Motul product would be for the trans, and where could I get them all? Also, how much is required for the Diff and Trans (liters?). Thanks!

What do I buy from them for my trans/center diff? How much? 4.5 Qts?

[Good2Go]

Am I reading correctly that the tool needed to remove the drain plug is a 1/2" square drive found on a common ratchet wrench. I took a quick glance under the car and I noticed a square drive and no hex on the plug. I want to make sure I have the right tool for this.

[arkleseizure]

Originally Posted by Good2Go

Am I reading correctly that the tool needed to remove the drain plug is a 1/2" square drive found on a common ratchet wrench. I took a quick glance under the car and I noticed a square drive and no hex on the plug. I want to make sure I have the right tool for this.

That's what I used to remove that drain plug...worked fine for me (with the requisite effort, naturally).

[Chris05STi]

Yup that is exactly what you have to use!

[Engmus]

Wait wait wait. As I read over this whole thread at first everyone is saying a straight 90weight only. Not to use a multiweight oil.

Now were back to multiweight?

To me it seems like the only diff oils that people recommend are the Motul 90PA

And the Fujutsu heavy industries lubricant.

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(Posted this in the amsoil thread as well)

Time to be the monkey in the wrench.

I talked with a upper Amsoil Engineer. He looked up the technical specifications on the 04\05 STi and got back to me over the phone.

He came to the conclusion that for the front diff\tranny to use...

http://www.amsoil.com/storefront/fgr.aspx?zo=515729

and for the rear diff to use

http://www.amsoil.com/storefront/svg.aspx?zo=515729

He said that would be the best that amsoil has to offer.

Thoughts?

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[Good2Go]

Originally Posted by arkleseizure

That's what I used to remove that drain plug...worked fine for me (with the requisite effort, naturally).

Thanks for the info on the tool. Got this done this past weekend along with a tranny and coolant change.

I found the greatest deal on a 1/2" monster breaker bar (25") from Harbour Freight for $8 with a coupon. Better hurry though, the coupon is only good for 2 more days. This could easily cost $60 or more from Sears. Here is the link to the part and the coupon. This made the job super easy (almost no requisite effort).

http://www.harborfreight.com/cpi/cta...emnumber=30395
http://www.harborfreightusa.com/html.../Images/11.gif

I also got a suction tool from Ace Hardware for like $5 that looked like a thin necked turkey baster that was perfect for getting the last bit of old oil out of the diff.

[non-ricer]

thnx for the writeup... i just finished and so far so good!