How to: changing rear diff oil - Page 4

weakness · 01-25-2008, 04:58 PM

Quote:

Originally Posted by blueman05

what about redline mt-90 i noticed its GL-4? whats that mean as is that ok to be in the 2005 sti tranny cause thats whats in mine. i was gonna put it in the rear diff... good or bad idea?

Redline MTL is 75w80 and Redline MT-90 is a 75w90. Both are listed as GL-4 certified.

For quite a great info for this specific topic, look at:

Maintenance FAQ: Read if you have any maintenance questions - Service & Maintenance - NASIOC

eroc263 · 01-25-2008, 06:32 PM

Just replaced mine yesterday. I left the oil in the car so it was cold and it was pretty thick which made it quite a chore to get it pumped in the diff. I use the OE STi LSD oil from subarugenuineparts.com. I changed it at 20K miles and now at 34K. I like to break the rear loose in the rain quite often so I like to change it frequently. I may try Motul next time... we'll see..

blueman05 · 01-26-2008, 09:01 AM

did mine the other day with motul and wasnt too bad the biggest pain was pumping it back into the diff with the crappy pump i had... next is the tranny and coolant then oil change.

***DjChieNa*** · 01-30-2008, 06:14 PM

Just did mine tonight out of sudden motivation rather than doing it over the weekend. I must say that whoever does this you must have some kind of oil pump. I lost my oil pump and had to mcguyver one which got pretty messy. Now my garage reeks of this oil!

aztlan-lt1 · 02-26-2008, 05:45 PM

Thanks For the write-up MARCEAU, just did mine tonight and the oil was filthy with only 18,800 miles.

Tip: Apply teflon in the opposite direction (counter clockwise) when ready to thread the plug.

harout18 · 02-26-2008, 07:39 PM

Im in the same boat as djchiena. Nice write up

blueman05 · 02-26-2008, 08:23 PM

i didnt use teflon tape i used thread lock liquid in a tube.

harout18 · 02-26-2008, 08:28 PM

I also used the liquid thread sealent

ytsohptwhere · 02-28-2008, 03:18 PM

Would it be safe to use 75W90 gear oil instead of the oil you use?

scutzi128 · 03-03-2008, 08:02 AM

Where can I get motul oil from?

***snorky*** · 03-03-2008, 08:50 AM

Normally I'd say: - Turn In Concepts But their supply is cashed.

Great prices here, this is where I order my stuff: Motul Lubricants

ytsohptwhere · 03-03-2008, 10:34 AM

I used 75w90 gear oil. Works just fine. That smell is just god awful!

MaxD · 03-04-2008, 01:23 AM

Sweet, going to do this pretty soon, nice guide.

SnowbordrWRX · 04-13-2008, 11:34 PM

Yeah don't wait until your rear diff catches fire

um like mine did.

***snorky*** · 04-14-2008, 09:57 AM

Quote:

Originally Posted by SnowbordrWRX

Yeah don't wait until your rear diff catches fire

um like mine did.

It literally caught fire?

What did you do fill it with paper?

01-25-2008, 06:32 PM	#47
eroc263 Junior STI Driver Car: 04' PSM STi Fav Mod: Stg. 2 Location: NC Posts: 146 Join Date: Nov 2006 Trader Rating: (1)	Re: How to: changing rear diff oil Just replaced mine yesterday. I left the oil in the car so it was cold and it was pretty thick which made it quite a chore to get it pumped in the diff. I use the OE STi LSD oil from subarugenuineparts.com. I changed it at 20K miles and now at 34K. I like to break the rear loose in the rain quite often so I like to change it frequently. I may try Motul next time... we'll see..

01-26-2008, 09:01 AM	#48
blueman05 Senior STI Driver Car: wrb 2005 STi Fav Mod: FP GREEN Location: MA Posts: 314 Join Date: Feb 2007 Trader Rating: (1)	Re: How to: changing rear diff oil did mine the other day with motul and wasnt too bad the biggest pain was pumping it back into the diff with the crappy pump i had... next is the tranny and coolant then oil change.

01-30-2008, 06:14 PM	#49
*DjChieNa* All day everyday Car: 05 Aspen/Gold STI Fav Mod: Debt Location: Laurel, MD Posts: 1,291 Join Date: Nov 2005 Trader Rating: (15)	Re: How to: changing rear diff oil Just did mine tonight out of sudden motivation rather than doing it over the weekend. I must say that whoever does this you must have some kind of oil pump. I lost my oil pump and had to mcguyver one which got pretty messy. Now my garage reeks of this oil!

02-26-2008, 05:45 PM	#50
aztlan-lt1 Lurker Car: CGM 05 STi Location: Albuquerque Posts: 6 Join Date: Aug 2007 Trader Rating: (0)	Re: How to: changing rear diff oil Thanks For the write-up MARCEAU, just did mine tonight and the oil was filthy with only 18,800 miles. Tip: Apply teflon in the opposite direction (counter clockwise) when ready to thread the plug.

02-26-2008, 07:39 PM	#51
harout18 Junior STI Driver Car: 05 Subaru Wrx STI Fav Mod: Greddy Tic Location: Chicago Posts: 105 Join Date: Jul 2007 Trader Rating: (0)	Re: How to: changing rear diff oil Im in the same boat as djchiena. Nice write up

02-26-2008, 08:23 PM	#52
blueman05 Senior STI Driver Car: wrb 2005 STi Fav Mod: FP GREEN Location: MA Posts: 314 Join Date: Feb 2007 Trader Rating: (1)	Re: How to: changing rear diff oil i didnt use teflon tape i used thread lock liquid in a tube.

02-26-2008, 08:28 PM	#53
harout18 Junior STI Driver Car: 05 Subaru Wrx STI Fav Mod: Greddy Tic Location: Chicago Posts: 105 Join Date: Jul 2007 Trader Rating: (0)	Re: How to: changing rear diff oil I also used the liquid thread sealent

02-28-2008, 03:18 PM	#54
ytsohptwhere Silver Member Car: WR Blue 04 WRX STi Fav Mod: 'STi' Licence Plate! w00t w00t Location: Ellensburg Washington Posts: 416 Join Date: Feb 2008 Trader Rating: (0)	Re: How to: changing rear diff oil Would it be safe to use 75W90 gear oil instead of the oil you use?

03-03-2008, 08:02 AM	#55
scutzi128 STI Driver Car: 04 STi Fav Mod: center pillar delete on grill Location: Media,PA Posts: 296 Join Date: May 2007 Trader Rating: (1)	Re: How to: changing rear diff oil Where can I get motul oil from?

03-03-2008, 08:50 AM	#56
*snorky* If in doubt, flat out Car: 32J GDFDYEH Fav Mod: Fullerton's Qrack on my car Location: Chicagoland Posts: 3,759 Join Date: Apr 2006 Trader Rating: (23)	Re: How to: changing rear diff oil Normally I'd say: - Turn In Concepts But their supply is cashed. Great prices here, this is where I order my stuff: Motul Lubricants

03-03-2008, 10:34 AM	#57
ytsohptwhere Silver Member Car: WR Blue 04 WRX STi Fav Mod: 'STi' Licence Plate! w00t w00t Location: Ellensburg Washington Posts: 416 Join Date: Feb 2008 Trader Rating: (0)	Re: How to: changing rear diff oil I used 75w90 gear oil. Works just fine. That smell is just god awful!

03-04-2008, 01:23 AM	#58
MaxD STI Driver Car: 06 SGM STi Location: Sac Posts: 212 Join Date: Jan 2006 Trader Rating: (2)	Re: How to: changing rear diff oil Sweet, going to do this pretty soon, nice guide.

04-13-2008, 11:34 PM	#59
SnowbordrWRX Drive True Posts: 1,337,039 Join Date: May 2002 Trader Rating: (0)	Re: How to: changing rear diff oil Yeah don't wait until your rear diff catches fire um like mine did.