marlin60 ~ I've been minding my oil changes by the oil life computer. I haven't done a great deal of driving so the typical 3000 mile rule doesn't apply. Only once when I recently drove cross country did I change before I left & once upon arrival, just for the sake of knowing where I stood from the standpoint of normal city driving. In these instances I used neither method (just common sense). I've a 2005 G6-GT that just turned 31K this morning. No problems from my perspective. Hope this helps...:
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