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Old 05-09-2017, 01:43 PM
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Oil life percentage

How does this work?
Is there something actually reading the oil or watching how the engine is used or am I just getting a count down to 8000 miles?

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Old 05-09-2017, 01:56 PM   #2
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The ecu measures inputs such as throttle position, coolant temp, oil temp and compares it to a map in the computer to calculate that percentage. I have more experience in GM cars than Chrysler. I had a 2004 Silverado that would consistently over 8000 miles before the light would come on and our 2014 Traverse went as high as 6500 and as low as 4100 miles before the light went on. Because the 3.8 uses so much more oil, I tend to change it long before the light comes on.
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