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Old 12-26-2001, 04:56 PM   #1
loeryder
Scooby Newbie
 
Member#: 3416
Join Date: Jan 2001
Location: St. Louis, MO
Vehicle:
2000 Impreza 2.5RS
Silverthorn Metallic

Default Frnt & Rr Diff + X Case Fluid change

Getting ready to do all fluid changes at 25k.

Front and rear Diff - What fluid to use? Mobil1 75W-80 ok?
Any secrets to drainging the front?

X Case - What fluid and how do I drain fill?

Trans sounds simple, anyone know how much fluid and what type to use>?

Model is MY00 2.5RS 5 spd.

Thanks for any help to make this easier.
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Old 12-26-2001, 05:11 PM   #2
North Ursalia
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Oct 1940 - Feb 2008

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Member#: 809
Join Date: Jan 2000
Chapter/Region: NESIC
Location: NH, Land Of Many Trees
Vehicle:
2000 2.5 RS, '14 For
92 5MT SVX

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Old 12-27-2001, 01:31 AM   #3
ANZAC_1915
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Member#: 456
Join Date: Oct 1999
Chapter/Region: NWIC
Location: Redmond, WA, USA
Vehicle:
2008 Forester XT
Steel Gray Metallic

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Yeah, but don't get under the car while supported by a jack like shown in the last picture.

Suggested fluids:

manual transmission: Redline 75W90NS
rear diff: Redline 75W90

Glenn
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Old 12-27-2001, 08:22 AM   #4
tmat3
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Member#: 2817
Join Date: Nov 2000
Location: NYC and Troy, NY
Vehicle:
2001 Impreza 2.5RS
BRP

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I used Valvoline Full Synthetic 75w-90 Gear Oil (which I bought at NAPA) for both tranny and rear diff. I can shift really well in any weather. I made a mistake of using 80w-90. Don't use 80w-90 because you won't be able to shift in the 32 degree or below weather.

Because you have a manual transmission, the transmission includes front and center differentials already. So, changing the transmission fluid takes care of the front and center diffs.

Here is the procedure for manual tranny and rear diff:
http://www.geocities.com/matsut_rpi00
Then click on "Maintenance and Repair".

Make sure you have a breaker bar or impact wrench gun for the rear diff. The drain and filler bolts are very hard to loosen.
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Old 12-27-2001, 11:36 AM   #5
CosmoTheCat
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Join Date: Jan 2001
Chapter/Region: NWIC
Location: Woolley
Vehicle:
1998 Ram 2500
Green.

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Isn't that funny about the rear diff? Torque spec calls for ~32 ft-lbs, but it takes several hundred to break it free. Grr. I recommend jacking the rear way up in the air, breaking the drain/fill free (but not removing), then jacking the front up. Drain the rear with the front way up in the air, then break the front free, drop the car level, plug and fill the rear, and drain the front while level. Plug & fill the front. I removed my Cobb and just used the long pointy bottles to fill, but that was a MAJOR pain, and I spilled gear oil on my exhaust. Now my car stinks. Some day it will go away. After I finished I remembered the siphon hose I bought for such an occasion. Next time...
I used Mobil1 75W-90 for both. Ran me about $35-40.
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