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...habits (not religious type) are hard to break!
...with dino-juice oil, I adhere to a 3,000 mile change interval; but, with 100% synthetic oil, I go 10,000 miles, but always "check" the oil for both color and acidity.
...of course, the GM Oil Life Monitor (Cruze) saying the oil is "good" for 12,500 miles lends lots of "piece-of-mind."
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