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OLM and why I ignore mine #5229918 10/04/19 04:59 AM
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demarpaint Offline OP
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I know a lot of people love their OLM, and swear by it, and that's fine. This has been a trend since they first came out for a lot of people, even after some had to be re-calibrated shortening the OCI. I ignore both OLMs in my 08 Liberty and 2016 Rubicon. UOA data indicated doing so was a good choice for "me." Both were overly optimistic, at least until now. Last oil change on my Liberty I reset the OLM, I always do when I change the oil. 3.5 months later and 2,451 miles it indicates I need an oil change. The only thing that changed with regard to how the vehicle was driven this OCI was I idled about 15 minutes longer than normal for a transmission fluid service to be certain I had the level dialed in. Typically the OLM will easily go three times that distance or more. And yes it was in fact reset. Hopefully I don't need a flame suit, I just found this interesting/odd. Maybe the OLM died?


God Bless Our Troops

Re: OLM and why I ignore mine [Re: demarpaint] #5229919 10/04/19 05:04 AM
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Skippy722 Offline
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I had that happen on my old Durango once... went ~7,000 miles and called for an oil change, so I did one and reset the thing... then ~3,000 miles later it was asking for another. Oil still looked fresh (yeah yeah I know that doesn’t mean anything but meh) so I reset it again.

Now that I change ours every 6 months, they never really go off.


2019 Ram 1500 Classic
2018 Dodge Grand Caravan GT

Slight Mopar obsession
Re: OLM and why I ignore mine [Re: Skippy722] #5229925 10/04/19 05:17 AM
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demarpaint Offline OP
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Originally Posted by Skippy722
I had that happen on my old Durango once... went ~7,000 miles and called for an oil change, so I did one and reset the thing... then ~3,000 miles later it was asking for another. Oil still looked fresh (yeah yeah I know that doesn’t mean anything but meh) so I reset it again.

Now that I change ours every 6 months, they never really go off.

Part of me says dump it and get a UOA, but I know that would be a complete waste of time and money. But it would prove again it's inaccuracy, only on the low end of the spectrum. I currently have no low end data. LOL I only have data from what I considered a good OCI for it.

If I change it every 6 months mine wouldn't have gone off either.


God Bless Our Troops

Re: OLM and why I ignore mine [Re: Skippy722] #5229929 10/04/19 05:32 AM
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billt460 Offline
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Originally Posted by Skippy722
Now that I change ours every 6 months, they never really go off.

I'm the same way. The one in my Jeep is WAY overly optimistic. At least in my opinion. I change oil and filter twice a year. After 3 oil changes it's telling me the oil still has 74% "life" left in it. Perhaps it will after it gets pumped out of the recycling tank over at AutoZone, and ends up in someone else's crankcase.

Re: OLM and why I ignore mine [Re: billt460] #5229935 10/04/19 06:01 AM
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demarpaint Offline OP
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Originally Posted by billt460
Originally Posted by Skippy722
Now that I change ours every 6 months, they never really go off.

I'm the same way. The one in my Jeep is WAY overly optimistic. At least in my opinion. I change oil and filter twice a year. After 3 oil changes it's telling me the oil still has 74% "life" left in it. Perhaps it will after it gets pumped out of the recycling tank over at AutoZone, and ends up in someone else's crankcase.

I ended up settling for 6K miles in the Liberty I'm writing about here.


God Bless Our Troops

Re: OLM and why I ignore mine [Re: demarpaint] #5229936 10/04/19 06:02 AM
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I don't go by it either. As others have stated it's overly optimistic and oil is cheap insurance.


2005 Chevrolet Corvette
2014 Ford F-150 4x4 supercrew
2014 Jeep Grand Cherokee Limited (wifes)
2012 Honda Civic 4 door (my daily driver)
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Re: OLM and why I ignore mine [Re: demarpaint] #5229971 10/04/19 07:05 AM
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Eddie Offline
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I expect that the newer OLM may be better than the older ones from ~ 2014?


2014 CX5 Touring 2.5L :-)
Re: OLM and why I ignore mine [Re: demarpaint] #5229973 10/04/19 07:12 AM
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BMWTurboDzl Offline
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perhaps a faulty sensor? Any shadow codes?


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

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Re: OLM and why I ignore mine [Re: Eddie] #5229977 10/04/19 07:19 AM
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demarpaint Offline OP
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Originally Posted by Eddie
I expect that the newer OLM may be better than the older ones from ~ 2014?

I would think so, although my 2016 is overly optimistic. Funny thing is back in 08 when my Liberty was new many thought the OLMs were dead nuts on in many brands, and it spurred a few good arguments here. I recall GM reprogramming some of theirs shortening the OCI, some thought that system was spot on as well. My point in all of this is for those following their OLM is to get a UOA to determine its accuracy, it will be money well spent imo.


God Bless Our Troops

Re: OLM and why I ignore mine [Re: demarpaint] #5229981 10/04/19 07:23 AM
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For most drivers, the use of a quality synthetic oil and 5000 mile oil changes will give the best results possible. The cost of 5 quarts of M1 is currently $22 at WarMart, so there really is not much to be saved by going cheaper.

As I keep mentioning, oil gets contaminated with soot and other particulates, it becomes saturated with combustion by products and fuel dilution is common with DI engines. An oil change is the only way to remove contaminates from your engine. It's cheap and effective.

Modern engines are showing a stunning number of failures. From cam chains, balancer chains, to cam bearings, rod bearings, and variable camshaft timing devices. A great many of those failures can be prevented by the proper choice of oil and more frequent changes.

I ignore the OLM.


People who count on their fingers should maintain a discreet silence.
Re: OLM and why I ignore mine [Re: demarpaint] #5229986 10/04/19 07:30 AM
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I don’t go by them either. I find them to be an annoyance. I don’t do UOAs either. Every 5,000 miles is good with me. As far as the UOAs, I see Blackstone encouraging people to keep pushing the limits on oil changes. BUNK!


2019 VW Tiguan SE 2.0 TSI Now: Castrol Pro OE LL IV 0W20 & OE VW
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Re: OLM and why I ignore mine [Re: demarpaint] #5229995 10/04/19 07:42 AM
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The olm in our Tahoe is nuts. I just change the oil every 5k. Much sooner than the olm wants which is 14000.


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Re: OLM and why I ignore mine [Re: demarpaint] #5230000 10/04/19 07:44 AM
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supton Offline
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None of mine have OLM's, and if I did get one with one, I'd ignore it. I do tire rotations every 5k as I've found my FWD cars wear tires "funny" if I don't; I might as well change the oil at the same time.


2011 Toyota Camry, base, 2.5L/6MT, 205k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 159k, ours
1999 Toyota Camry LE, 2.2L/4AT, 225k, his
Re: OLM and why I ignore mine [Re: supton] #5230012 10/04/19 08:07 AM
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demarpaint Offline OP
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Originally Posted by supton
None of mine have OLM's, and if I did get one with one, I'd ignore it. I do tire rotations every 5k as I've found my FWD cars wear tires "funny" if I don't; I might as well change the oil at the same time.

thumbsup That's what I do with my 2016 Rubicon.


God Bless Our Troops

Re: OLM and why I ignore mine [Re: BMWTurboDzl] #5230021 10/04/19 08:15 AM
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buster Offline
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Originally Posted by BMWTurboDzl
perhaps a faulty sensor? Any shadow codes?


That's what I was wondering. Seems awfully short. shrug

A UOA though is the way to go. What oil are you running? Just curious.


2020 - Mazda CX-30 - Mobil 1 EP 0w20
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