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Old 11-29-2006, 06:13 PM   #1
NegativeOne
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Member#: 133568
Join Date: Nov 2006
Chapter/Region: AKIC
Location: Anchorage, AK
Vehicle:
2011 WRX-His
2006 LGT-Hers

Default I need fluid help!

What does everyone recommend in the 04 STi's tranny and rear diff? I know it's GL-5 but I wanna see if anyone's had any luck (or hardships) with different brands. Any help would be greatly appreciated
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Old 11-29-2006, 06:30 PM   #2
SQUAD_907
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WOW! JUST WOW!
I make posts disappear

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arctic gear lube 75-90w...chevron!
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Old 11-29-2006, 06:42 PM   #3
edo2000
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Location: Kenai Peninsula, AK
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2012 WRX
red

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Quote:
Originally Posted by NegativeOne View Post
What does everyone recommend in the 04 STi's tranny and rear diff? I know it's GL-5 but I wanna see if anyone's had any luck (or hardships) with different brands. Any help would be greatly appreciated
There are several threads about this which you can find if you search. Everyone seems to recommend NOT to use Mobil 1.

A lot of folks just recommend a good quality, GL-5, non-synthetic. Definitely a lot cheaper than the synthetics...
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Old 11-29-2006, 08:01 PM   #4
prometheum
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Location: Tatooine
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04 bicycle!

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Quote:
Originally Posted by edo2000 View Post
There are several threads about this which you can find if you search. Everyone seems to recommend NOT to use Mobil 1.

A lot of folks just recommend a good quality, GL-5, non-synthetic. Definitely a lot cheaper than the synthetics...
uuh i hear the rear diff will take anything
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Old 11-30-2006, 12:18 AM   #5
00Maddog
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Join Date: May 2004
Chapter/Region: AKIC
Location: its bristol baby
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2004 wrx w/o engine
psm/carbon

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wow guys you are not thinking....

sti has a special lsd in the rear that requires special oil. i have seen one filled with gl-5 only and less then 1500 miles later it was making bad noises. i took it apart and the metal to metal clutches were galled and blued from heat.

so super duper sti oil comes in 1L cans, and cost about $30. the entire can is in japanese and i could not find a spec anywhere. soo... i gave a half full can to the bg oil guy that comes into my work to bring product, and he shipped it to bg to analyze. turns out it's just gl-5 with GM rear lsd additive.

a good subsitute for gm lsd additive is "equatorque" lsd additive, which can be bought for about 8-10$ at most parts stores. keep in mind if anyone trys this you are forging new ground....

so either buy the real thing, make your own cheap subsitute, or put away about $1000 for some rear diff parts.

oh yeah the trans just takes regular old gl-5
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Old 11-30-2006, 01:20 AM   #6
Getagrip
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If I had an STi or an STI, would only use OEM. Not worth the few bucks saved to "forge new ground" BTW Conti stocks the special sauce.

Jake
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