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Old 03-05-2008, 11:30 AM   #2
Scooby Guru
Member#: 80663
Join Date: Jan 2005
Chapter/Region: SWIC
Location: Glendale, AZ
2005 STi


When it warms up over there, try a good synthetic 40 weight and see if that helps (I know that GC is almost a 40 weight) with wear. I almost exclusively use Red Line 10w40 in my STi. I tried GC once and greatly preferred the Red Line. Not saying you need to bump up to a really expensive oil like the RL, just see what a thick weight does. Also, the results from the Mobil Clean 7500 seem to have been the best, but it seems to be bit of a give and take between that and the GC. I do like the consistent results of the GC though.
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