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Old 11-18-2003, 08:46 AM   #1
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Join Date: Oct 2003
Chapter/Region: MWSOC
Location: Grand Rapids, MI
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Default 02 WRX, 5w-30 vs. 0w-40 mobil1?

The previous owner always used Mobil1 0w-40 since the car's beginning and now I own it with ~60k, wouldn't I benefit more performance and fuel economy with 5w-30 mobil1? The engine consumes no oil
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