gear oil/differentials

umscooby · 12-03-2005, 02:40 PM

just wondering the quantities needed to change the dif. oil in all three difs. any other input is appreciated too.

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Jon Bogert · 12-03-2005, 03:40 PM

You only put special oil (LSD oil) in the rear. Capacity is about a liter--officially ".9L to 1.1L (1.0-1.2 qt)"

Samurai Jack · 12-03-2005, 06:52 PM

According to the '04 Manual:
MODEL 2.5 L Turbo STi, 6MT
Rear differential T-type model with LSD Mechanical
Oil capacity = 1.0 — 1.2 US qt
Rear differential gear oil GL-5 (For mechanical LSD)

There is no value for a Front Differential.

The transmission gets 4.3 U.S. Quarts.

I haven't heard of anyone using "Special LSD" gear oil. As far as I know, everyone on the board, or those that have spoke up at 1 time or another, are using some form of synthetic, ie; Redline, or plain Dino oil, or some otjer concoction that they threw together.

Hayes · 12-03-2005, 07:13 PM

According to my 2000 manual. Front differental 80/90 GL5 gear oil. Rear differental 75/90 GL5 gear oil. The LSD does not require any special gear oil other than it must meet the GL5 spec.

kendogg41 · 12-05-2005, 09:38 PM

What type of friction modifier is needed for a subaru LSD? It's IMPOSSIBLE that you need NO friction modifier for a LSD unit. Or do most people use like the redline that already has the modifier mixed in?

heffergm · 12-06-2005, 06:38 AM

No, it's not impossible. The WRX uses a sealed LSD. There's no need to add friction modifier.

Quote:

Originally Posted by kendogg41

What type of friction modifier is needed for a subaru LSD? It's IMPOSSIBLE that you need NO friction modifier for a LSD unit. Or do most people use like the redline that already has the modifier mixed in?

Jon Bogert · 12-06-2005, 07:10 AM

The original poster has an STI with a plate type rear LSD. If you do not have an STI, you have a viscous coupling rear LSD. Apples and oranges. When you read or post, make sure you know which one is being referred to.

12-03-2005, 02:40 PM	#1
umscooby Scooby Specialist Member#: 50902 Join Date: Dec 2003 Chapter/Region: RMIC Location: The Mountains Vehicle: 05 STi White	gear oil/differentials just wondering the quantities needed to change the dif. oil in all three difs. any other input is appreciated too. * Registered users of the site do not see these ads.

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12-03-2005, 03:40 PM	#2
Jon Bogert Scooby Specialist Member#: 1133 Join Date: Mar 2000 Location: SE PA Vehicle: '02 996 C4S '95 993 '71 911 3.0 '04 STI	You only put special oil (LSD oil) in the rear. Capacity is about a liter--officially ".9L to 1.1L (1.0-1.2 qt)"

12-03-2005, 06:52 PM	#3
Samurai Jack Scooby Specialist Member#: 21145 Join Date: Jul 2002 Chapter/Region: NESIC Location: Not in my own time Vehicle: 2002 Enemy of Aku	According to the '04 Manual: MODEL 2.5 L Turbo STi, 6MT Rear differential T-type model with LSD Mechanical Oil capacity = 1.0 — 1.2 US qt Rear differential gear oil GL-5 (For mechanical LSD) There is no value for a Front Differential. The transmission gets 4.3 U.S. Quarts. I haven't heard of anyone using "Special LSD" gear oil. As far as I know, everyone on the board, or those that have spoke up at 1 time or another, are using some form of synthetic, ie; Redline, or plain Dino oil, or some otjer concoction that they threw together.

12-03-2005, 07:13 PM	#4
Hayes Scooby Specialist Member#: 11808 Join Date: Oct 2001 Location: Cape Coral,FL	According to my 2000 manual. Front differental 80/90 GL5 gear oil. Rear differental 75/90 GL5 gear oil. The LSD does not require any special gear oil other than it must meet the GL5 spec.

12-05-2005, 09:38 PM	#5
kendogg41 Scooby Newbie Member#: 90822 Join Date: Jul 2005 Location: Athens, GA Vehicle: 1993 BMW 325 British Racing Green	What type of friction modifier is needed for a subaru LSD? It's IMPOSSIBLE that you need NO friction modifier for a LSD unit. Or do most people use like the redline that already has the modifier mixed in?

12-06-2005, 07:10 AM	#7
Jon Bogert Scooby Specialist Member#: 1133 Join Date: Mar 2000 Location: SE PA Vehicle: '02 996 C4S '95 993 '71 911 3.0 '04 STI	The original poster has an STI with a plate type rear LSD. If you do not have an STI, you have a viscous coupling rear LSD. Apples and oranges. When you read or post, make sure you know which one is being referred to.