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    Mobil1 EP 10W30 4200mi '99 Buick Regal LS

    I'm new to this site, although I have read up on some great information here before. I posted my first oil analysis on my main forum and it was suggested I post it here as well. Here's the analysis. I have not used an additive in quite a few oil changes now, so my question is what bearing is...
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