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Old 12-15-1999, 02:39 PM   #1
Scooby Newbie
Member#: 624
Join Date: Dec 1999
Location: Seattle, WA
Question Syn lubes for tranny and diffs

What's peoples thoughts on using synthetic oil in the tranny and differentials? What about brands. Redline seems to be highly reguarded.

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Old 12-15-1999, 03:13 PM   #2
Scooby Specialist
Member#: 105
Join Date: Jul 1999
Location: Fremont, CA 94538
2000 Legacy GT Ltd


Mobil 1 is as good as Redline but much less.
Use it after the car is at least 10Kmi.
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Old 12-15-1999, 06:45 PM   #3
Scooby Newbie
Member#: 431
Join Date: Oct 1999
Location: Baraboo WI, USA
Thumbs up

I have been using Mobil 1 for the trans and rear diff, shifts better almost instantly! Nice and smooth, cold weather? not a problem with the synthetic, shifter moves nice and easy. Very worth the money :-)

'92 Turbo Legacy
130000mi and still going strong!
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Old 12-16-1999, 05:18 AM   #4
NASIOC Supporter
Member#: 132
Join Date: Jul 1999
Chapter/Region: Tri-State
Location: Central PA
2006 GT Ltd 5spd sdn
2015 WRX 6spd CWP


I use Mobile 1 in both as well with no problems but I'm going to try Mobile 1's gear oil without the friction modifiers, for the tranny( like Redline NS). Supposedly it's a little better for our trannys but not absolutely needed. I've also read something a while back on the GVR4 message board about something in Redline tranny fluid that eats away at bearings over time. Don't know how true it is though.
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