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[ASKED] Oil life monitor calibration same for dry and wet sump?

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[ASKED] Oil life monitor calibration same for dry and wet sump?

 
Old 10-15-2018, 11:31 PM
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Patman
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Default [ASKED] Oil life monitor calibration same for dry and wet sump?

I'm curious if the algorithm is exactly the same for the oil life monitor on the dry sump equipped cars as it is for the wet sump equipped cars? With the extra 3 quarts of oil in the dry sump (30% more oil), in theory the oil should last longer between changes and therefore I wonder if the OLM allows for that extra mileage possibility?
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Old 10-16-2018, 04:06 PM
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Also, member Gearhead Jim was wondering how the OLM takes into account both the time factor and the mileage factor. For example, this is the thread he posted in the C7 General forum, and was wondering if he could get some more clarification on it:

The OLI on the C7 counts time, in addition to the other parameters we are familiar with.

My understanding is that if you got the oil changed and the indicator set back to 0, and didn't start the car at all, after six months the OLI would show about 50% remaining and after a year it would be at 0%.

My understanding is that if you got the oil changed and the indicator set back to 0, then went off on a long/fast road trip within a week, after about 4,000 miles the OLI would be down to about 50% and after about 8,000 miles it would be down to about 0% (depending on driving conditions, of course). Even though the oil had been changed only a week ago.

How do those two things combine?
If you used up half of the oil life in a quick/fast drive, the OLI would be down to 50%. If you then parked the car for six months, would the OLI go to 0% even though you had "used" only 50% of the life and it was only six months from the last change?
Or does the system calculate the life used by driving, and the life used by time, and apply the most extreme of the two but not both at once?
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