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OK, this is my official spot. Check back for updates here.
All logged in KM, will also convert to miles. Will post as often as I can when I see the % change. My driving is probably 98% city, average trip of maybe 12-15KM, say 10-12 miles, mildly heavier right foot, last few days hovered around freezing.
With app. 25,500KM on it, and 4th oil change, that's 6375KM / 4000 miles per oil use.
In theory I should thus get 64KM / 40 miles for every %, but change my oil around 10% remaining, so kinda more like 71/44 (/0.9)

4th oil change at 25,639
Monitor went to 99%, get this... at 25,659
99% at 25659 (20KM, 12 miles)
98% at 25697 (38KM, 24 miles)
97% at 25752 (55KM, 34 miles)
96% at 25797 (45KM, 28 miles)
95% at 25848 (51KM, 32 miles) still hovering around freezing
 
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Hi, I have the Australian version 2019 Holden Acadia, first year it dropped to 10% at the 12 month service date but had only done 6600kilometres. currently done another 5700kilometres after 7 months since last service and is indicating 33% remaining. The only problems so far are failure to recognise the remote but only occasionally. Holden now out of business and local agent is now a mitsubishi dealer who welcomed me to the mitsu family, not sure how the three diamonds will look on the grille.
 

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2020 Acadia Denali, Ultimate Package, Technology Package, Towing Package, White Frist Tricoat
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Just a general question that has been touched on but not really documented - -

How quickly does the Oil Life Monitor % go down in miles after you have an oil change?

Yes, we know it depends on driving conditions, amount of idling, etc.

But I've noticed no matter what, the OLM % goes down more quickly than any other of the 3 GM vehicles we've owned since 2015 with the 3.6L LGX V6 engine.

For instance, I had the oil changed, is 32F today, sunny and drove to a nearby town with a 24 mile round trip at 45 to 60 MPH and little idling. Checked the OLM and it was down to 92% ! !

And 8% drop in 24 miles and about 35 minutes of engine run time ? ?

I've also noticed that the OLM % will get down to the 40% to 50% range after only 1,700 to 1,800 miles of light driving, little to no idling other than a few traffic lights, and includes some highway at 55 to 60 MPH in summer driving.

The other vehicles we had would go 4,000 miles before getting anywhere near 40% OLM.

So, , , , Question:

Does anyone else take note of the OLM % drop rate after an oil change and notice it decreases comparatively rapidly ?

Maybe stop back occasionally and update after an oil change and note miles driven and % noted.
Although I haven't really kept track of the mileage at oil changes, for what its worth I can tell you that I have done 2 oil changes on my 2020 Acadia Denali and the OLM currenlty shows 67% at 10,524 miles. I purchased the vehicle on September 24, 2020 and as you can see do not drive it too much, most of it city driving (about 80%) and I live in San Diego, so no climate extremes.
 

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My 2019 Denali V-6 appears to deem 0% will be slightly over 5000 miles. I have no idea when it would hit zero, because after comparing the price of engine repair/replacement/rebuild, I prefer to continue what I've been doing since the last century, replace no later than 5000 miles, even though I use only Mobil 1, unless I going from V to CA & back. The oils today hold up better, but they still get condensation, contaminants, etc. My 2016 Yukon appears to head for 9000 miles to be 0% left. This is the easiest car I've ever owned, on which to change the oil.
 

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Discussion Starter · #25 ·
My 2019 Denali V-6 appears to deem 0% will be slightly over 5000 miles. I have no idea when it would hit zero, because after comparing the price of engine repair/replacement/rebuild, I prefer to continue what I've been doing since the last century, replace no later than 5000 miles, even though I use only Mobil 1, unless I going from V to CA & back. The oils today hold up better, but they still get condensation, contaminants, etc. My 2016 Yukon appears to head for 9000 miles to be 0% left. This is the easiest car I've ever owned, on which to change the oil.
This sounds close to what I might get for OLM miles. But we've driven so few miles, I've gotten and oil change notice twice now because of nearing 12 months. In 2020 it was only at about 2,500 miles and in 2021 is was at about 6,600 miles 04, 3,100 miles of driving.

I just think that oil life % decreases much more quickly even with little miles driven in a week or two after an oil change. In other words, very little time or miles driven. It is notably different than my wife's GM vehicle.
 
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