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Old 06-18-2001, 05:18 PM   #1
czo79
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Member#: 6752
Join Date: May 2001
Location: Montpelier, VT, USA
Default redline synth gear oil

I know people have covered this...but is the correct redline oil to run in a 5spd (97 legacy 2.5 GT) the 70w90NS? I have been unable to get the search function to work....
Thanks
Micum
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Old 06-18-2001, 05:25 PM   #2
CSM101
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Join Date: Nov 2000
Location: Far side of Hell
Vehicle:
2001 Impreza 2.5RS
BRP

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Yes.
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Old 06-18-2001, 05:31 PM   #3
Albert
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Join Date: Dec 2000
Location: San Diego, CA. USA
Vehicle:
1998 Impreza 2.5RS
Rally Blue Pearl

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yes, use "NS" in tranny only.
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Old 06-18-2001, 07:37 PM   #4
cvalle-sd
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Member#: 420
Join Date: Oct 1999
Chapter/Region: SCIC
Location: The LBC, CA, USA
Vehicle:
2001 Cr-V
Silver

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I used 3 qt. NS w / one quart Lt. Shockproof. I may try a 50/50 mix. I do a lot of heel/toe and blip-throttle downshift, so I like the idea of better metal-to-metal prevention.
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Old 06-18-2001, 08:36 PM   #5
HomerJay
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Join Date: Mar 2000
Chapter/Region: BAIC
Location: BAICED
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2005 WRX WAGON
Silver

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I don't know about the legacy, but a lot of RS owners have had problems with Redline being too thin and have resorted to mixing with a heavier weight to avoid the problem.

-JOE
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Old 06-19-2001, 12:18 PM   #6
EchoWrx
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Member#: 4101
Join Date: Feb 2001
Location: Minneapolis
Vehicle:
2000 Impreza
White

Talking What I use...

Use lighter fluid U have better or faster shifting use heavier fluid U have better bearing wear protection. Redline recommends: 4 quarts of 75-90ns is good in the front tranny, 1 quart of 75-90~ is good in the rear. 75-90ns(non-slip) or 75-90~ or MTL-90 can be used in front or rear tranny/diff just fine. I know Impreza owners who use all of these in different combinations. It gives the car a different feel with diffrent combinations.

1) 75-90~ is more for protection, it is slipperier and has better protection for Tranny bearings and rear diff, but it's harder to get into gear with this fluid, sychronizers may not like this to much. Also you get less lock-up with your rear LSD differential.

2)MTL-90 has less protection for your gear box (it's better than any normal Tranny fluid). It is easier to shift and locks up very well. U may need to change more often than standard fluids (Instead of 50K, change @ 27-30K...not bad...)

3)75-90ns good wear protection, easier to shift into gears, and the rear lsd differential would lock up or react faster. Works well in Minnesota cold weather. But when it gets California/Arizona hot, the shifting gets crunchy and the Tranny bearings don't like this.

Just remember that bearings last twice as longer than synchronizers do.

Also read this http://www.cobbtuning.com/tech/gearoil/index.html

Good luck
Gill
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Old 06-19-2001, 03:50 PM   #7
omahasubaru
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Join Date: Jun 2000
Chapter/Region: MWSOC
Location: Gretna, NE
Vehicle:
1995 WRX
2002 Legacy

Question Where???

Where is the cheapest place to obtain some MTL-90 to do the whole car? I'm at 30k and it needs done.
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Old 06-19-2001, 04:15 PM   #8
HomerJay
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2005 WRX WAGON
Silver

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Contact the guys on the redline website, they'll let you know the best place to purchase in your area.
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Old 06-19-2001, 04:17 PM   #9
Santo Domingo 2.5 RS
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Join Date: Apr 2001
Location: Santo Domingo. R.D
Vehicle:
2000
Silverthorn Metallic

Question

what do you think about using MTL 70w 80 in the transmission and 75w 90 on the rear end? plus i live in the caribbean, where we have a lot of humedity and hi temperatures.
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