Originally Posted by re-rx7
...The reality is that motor oils do not need to be changed because they thin with use. It is the eventual thickening that limits the time you may keep oil in your engine. The limit is both time itself (with no motor use) and/or mileage use...
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That and the amount of contaminates that get suspended in the oil over time, and the degradation of the anti-wear additives in the formula.
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2013 Cadillac ATS Performance, 3.6L
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Formerly:
2012 GT Automatic, Kona Blue w/Stone interior
The usual exhaust mods, JLT CAI, Brenspeed tune, BMR LCAs
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