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    GC 0W-30 | '10 Impreza | 4.2-5.7k mi

    I've been using 0W-30 GC since I bought my car 34k mi ago. Unfortunately, I've only been bothering with UOAs for the last year or so. For the most part I've been quite happy with GC, but the most recent test showed a suspiciously high particle count on both the used and virgin samples and the...
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