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Old 10-07-2012, 11:58 AM   #2
the suicidal eggroll
Scooby Guru
Member#: 51961
Join Date: Jan 2004
Chapter/Region: RMIC
Location: Broomfield, CO
2005 STi
2012 WRX


The difference is usually in the additives. Some fluids have additives that help out synchros, some have additives that help out limited slips, etc.

For the WRX, TiC recommends the Motul Gear300 75w90 for both the tranny and the rear diff. For the STi, they recommend the same tranny fluid, but Motul 90PA for the rear diff because it has some LSD additives (WRX doesn't have a rear LSD).
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