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#4778634 - 06/05/18 10:15 PM How long will the olm let it go?
Chris142 Offline


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
The olm on the wife's Tahoe has always gone way longer that I think it should. She does many short trips,sits in parking lots idling etc. I change the oil and filter every 5k regardless. The olm has never gone off before 5k.

As a test Last time I did not clear the olm. It's been 7k so far. How long do a think it will go before it says to change the oil?
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#4778636 - 06/05/18 10:16 PM Re: How long will the olm let it go? [Re: Chris142]
4WD Offline


Registered: 09/21/10
Posts: 6366
Loc: Texas
Only get 7k+ out of mine with maybe 60/40 highway/city Ö

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#4778637 - 06/05/18 10:17 PM Re: How long will the olm let it go? [Re: Chris142]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
Same generation GM OLM and same problem. Lots of short trips, all winter long too. How intelligent is it- is it compensating for cold starts and fuel consumed or just on mileage?

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#4778642 - 06/05/18 10:20 PM Re: How long will the olm let it go? [Re: Chris142]
csandste Offline


Registered: 05/31/02
Posts: 1178
Loc: St. Peters, Missouri
It's pretty intelligent and I'd trust it. Miss the OLM in switching from a Buick Encore to a Kia Soul. I usually changed at 15-20%. Other than electronics, the Soul is better, however.


Edited by csandste (06/05/18 10:20 PM)
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#4778645 - 06/05/18 10:22 PM Re: How long will the olm let it go? [Re: Chris142]
Snagglefoot Offline


Registered: 12/31/17
Posts: 1707
Loc: Alberta
I got 10,200 miles of highway driving. In mixed driving itís usually about 7500 miles so certainly it can detect highway miles from slower city miles. 2008 6 liter Chev 3/4 ton Burb


Edited by Snagglefoot (06/05/18 10:34 PM)

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#4778659 - 06/05/18 10:38 PM Re: How long will the olm let it go? [Re: csandste]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
Originally Posted By: csandste
It's pretty intelligent and I'd trust it. Miss the OLM in switching from a Buick Encore to a Kia Soul. I usually changed at 15-20%. Other than electronics, the Soul is better, however.


Been trying to trust it too, but the OCI can get lengthy in an old lady's short tripper-- that thing can easily go 1.5-2years. In one year, it dropped to 60% and I just had to change it.

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#4778663 - 06/05/18 10:41 PM Re: How long will the olm let it go? [Re: Snagglefoot]
oldmaninsc Offline


Registered: 09/25/06
Posts: 1576
Loc: California
My 2005 Trailblazer with 4.2 engine would go out to just over 10,000 miles when I drove freeway miles. Lots of low speed driving and idling and short trips and that would drop to about 6K - 7K miles. Of course it held 7 quarts of oil. IIRC, I would usually run the OLM down to about 10 - 20 percent and then change it.
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#4778666 - 06/05/18 10:44 PM Re: How long will the olm let it go? [Re: oldmaninsc]
Chris142 Offline


Registered: 06/05/03
Posts: 16817
Loc: Deplorable in apple valley, ca
Originally Posted By: oldmaninsc
My 2005 Trailblazer with 4.2 engine would go out to just over 10,000 miles when I drove freeway miles. Lots of low speed driving and idling and short trips and that would drop to about 6K - 7K miles. Of course it held 7 quarts of oil. IIRC, I would usually run the OLM down to about 10 - 20 percent and then change it.
I don't think hers shows percent used. I sure can't find it.
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#4778668 - 06/05/18 10:44 PM Re: How long will the olm let it go? [Re: Chris142]
MaximaGuy Offline


Registered: 09/20/03
Posts: 1220
Loc: Austin, TX
Don't trust OLM, stick with a sensible schedule based on usage.
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#4778682 - 06/05/18 11:02 PM Re: How long will the olm let it go? [Re: Chris142]
TheLawnRanger Offline


Registered: 03/18/18
Posts: 386
Loc: Mississippi
Too bad you can't check oil like anti-freeze.
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#4778684 - 06/05/18 11:04 PM Re: How long will the olm let it go? [Re: Chris142]
JLTD Offline


Registered: 12/15/17
Posts: 645
Loc: US
Ever done a UOA? Might shed some light on the situation for you.
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Hers: 2008 Jeep Liberty 134k, Amsoil SS 5w30/Amsoil, minimum 10k oci

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#4778693 - 06/05/18 11:29 PM Re: How long will the olm let it go? [Re: Chris142]
WobblyElvis Offline


Registered: 09/23/14
Posts: 1343
Loc: Toronto Canada
The GM OLM in my car is conservative and I normally exceed what it recommends. I went twice as far as it suggested once, but I added 3 qts of oil during that 15,000 mile run. UOA said everything was fine.

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#4778696 - 06/05/18 11:40 PM Re: How long will the olm let it go? [Re: Chris142]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6145
Loc: USA
The OLM will let it go until it's time to change the oil drive

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#4778713 - 06/06/18 12:19 AM Re: How long will the olm let it go? [Re: Chris142]
Nick1994 Offline


Registered: 02/19/13
Posts: 10097
Loc: Phoenix, AZ
Does it have any buttons on the steering wheel?

The gas pump button shows the mpg and the engine oil life percentage.
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#4778720 - 06/06/18 12:52 AM Re: How long will the olm let it go? [Re: Chris142]
Falcon_LS Offline


Registered: 10/03/08
Posts: 4053
Loc: Kuwait
I go by the OLM on the GMC and the Cadillac. Because of the extremely dusty weather, I do a simple drain and refill at 50%. I change it out when it gets down to 1%, along with the air filter and oil filter.

Both are export vehicles calling for ACEA A3 in the manual as the specification of choice. Viscosity chart permits 0W-30 all the way up to 20W-50, I stick with Castrol Edge 0W-40 in German or Belgian flavor, depending on what's available. If I do a lot of highway driving, about 12,000 miles sounds right, but that doesn't happen too often anymore. As it stands, at ~4,500 miles the OLM will hit 50% and that's when I do a drain and refill. The oil still comes out pretty clean, but it's the dust I'm worried about and not the OLM.
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