OLM system... Do you trust it and what about synthetics? - Chevy Traverse Forum: Chevrolet Traverse Forum
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post #1 of 54 (permalink) Old 06-15-2019, 08:04 PM Thread Starter
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OLM system... Do you trust it and what about synthetics?

Folks. I'm a DIYer and just changed the oil in my 2019. Super easy btw. Anyway, only the best for my cars, so I put in 5w30 synthetic and a Delco filter (heard there were issues with other filters). Anyway, do I trust the OLM system to accurately gauge when to make the next change? Does it account for the extended life of a synthetic? Does not following the OLM break warranty? Thx in advance.
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post #2 of 54 (permalink) Old 06-16-2019, 08:55 AM
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The system doesn't test the oil. The computer takes different conditions like engine load, engine temp, outside temp, etc and calculates how the oil is effected. It doesn't know what type of oil you use. Regarding them monitoring things for warranty, it's totally possible and wouldn't surprise me. Now you could always just reset the system when it says to replace oil and track the milage yourself but I actually think the calculation method makes a lot more sense.
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post #3 of 54 (permalink) Old 06-16-2019, 10:09 AM
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Can't go wrong changing the oil when the OLM "engine killer" reaches 50%. Rest trip 2 odometer to 0 at the same time as the OLM and you always have a handy, accurate reading of mileage on the oil to supplement the engine killer reading.
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Current Chevys -'19 Silverado RST;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous&nbsp; Chevys:16 Silverado LT;16 Malibu LT2;'17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova
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post #4 of 54 (permalink) Old 06-16-2019, 11:38 AM Thread Starter
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I appreciate both of your responses. Seems like there's an opportunity to make this thing a pretty valuable tool but I Don't get why GM wouldn't offer an option in the computer... something like "synthetic or traditional" oil used, since the synth should significantly increase the life of the oil/time between changes. I suppose it's possible, they don't give a ****, and they want me back in the dealership as much as possible... Which ain't gonna happen!
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post #5 of 54 (permalink) Old 06-17-2019, 07:59 AM
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Basically, GM's oil recommendation is synthetic Dexos, so it appears that should be built into the equation.
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post #6 of 54 (permalink) Old 06-17-2019, 08:07 AM
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"OLM Engine Killier" That's a new one to me... modern synthetics and filters have been proven to last the intervals recommended by the manufacturers. Changing before that is never detrimental to an engine but I've never heard someone refer to it as an "engine killer".

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post #7 of 54 (permalink) Old 06-17-2019, 11:05 AM
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Bear in mind, I have a 2011 Traverse, but...

While I have owned it, I have sent my used oil off for analysis a few times and have found that with the Traverse's direct injection engine, it really beats up on the oil, and while my oil still had some TBN left, the Traverse's "oil change monitor" was fairly accurate, to show when you needed a change for the oil quality only. This was me using Penzzoil Platinum full synth oil, or the dealer's synth choice.

Also the Traverse's seem to eat some oil too (maybe the newer 2019 models are different?), so it's important to check your oil level regularly as I would bet by the time your oil life monitor says you're nearing the oil's change time, I would bet you're down at least a quart of oil by then, if not more. That's why people say not to rely only on the oil life monitor only - double-check your level, often.
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post #8 of 54 (permalink) Old 06-17-2019, 11:07 AM
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Quote:
Originally Posted by dad2bandm View Post
Bear in mind, I have a 2011 Traverse, but...

While I have owned it, I have sent my used oil off for analysis a few times and have found that with the Traverse's direct injection engine, it really beats up on the oil, and while my oil still had some TBN left, the Traverse's "oil change monitor" was fairly accurate, to show when you needed a change for the oil quality only. This was me using Penzzoil Platinum full synth oil, or the dealer's synth choice.

Also the Traverse's seem to eat some oil too (maybe the newer 2019 models are different?), so it's important to check your oil level regularly as I would bet by the time your oil life monitor says you're nearing the oil's change time, I would bet you're down at least a quart of oil by then, if not more. That's why people say not to rely only on the oil life monitor only - double-check your level, often.
My 2011 ate oil, too, but my 2017 doesn't. Don't know why.

2011 2LT FWD replaced by 2017 2LT AWD
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post #9 of 54 (permalink) Old 06-17-2019, 01:34 PM
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Can't go wrong changing the oil when the OLM "engine killer" reaches 50%. Rest trip 2 odometer to 0 at the same time as the OLM and you always have a handy, accurate reading of mileage on the oil to supplement the engine killer reading.
I use "Trip A" to calculate fuel economy between fill ups, and I use "Trip B" to monitor mileage between oil changes, and relate it to the OLM. On my 2012, my last oil change (Penzoil Full Synthetic) the OLM was down to 10% at about 3,000 miles. I did do the oil change as it's a cheap insurance policy, but that seems like a low number for full synthetic oil change intervals. Oil level was still right at full on the dipstick, so that's good I guess.
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post #10 of 54 (permalink) Old 06-17-2019, 04:01 PM
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Originally Posted by cintocrunch View Post
"OLM Engine Killier" That's a new one to me... modern synthetics and filters have been proven to last the intervals recommended by the manufacturers. Changing before that is never detrimental to an engine but I've never heard someone refer to it as an "engine killer".

I didn't coin it, some of the mechanics did. The thing is as dumb as the idiot lights. It's not what it measures, it is what it doesn't monitor or measure. There is no clock in it so it has no idea how long the engine sits between oil changes, it doesn't measure the quality of the air or the gasoline or the oil.....no idea if it is running in sub zero or 100 degree weather or high humidity which promotes organic acid formation in the crankcase, overheat conditions, or the if the quickee change guy loaded in dino oil or bulk recycled oil, whether the PCV system is faulty and if the wrong grade oil or whether it was changed at all when the OLM was reset. And that goes for the filter too.....there is a TSB out on cheapo filters that shed filter material and cause engine damage. That PF63E environmental friendly version of the PF63 is made like crap in comparison, cardboard end caps and glue holding the filter media instead of steel, plastic screen instead of steel. The synthetic old may be good for 15K but no way I'd trust any filter for that length of usage.



I've been doing my own oil changes for over 50 years and I always know what is in it, how much was added and how long it was in and more importantly when the filter was changed and not just wiped clean.......the OLM doesn't have a clue if it was just wiped and the crud oil remained in the filter. Besides every 3-4K is an excellent time to check out the underbelly and running gear......more than one occasion spotted a chafing water hose or cracked sheathing on a brake line.


And with the multiple grades of oil in use and changing crankcase capacities, even a dealer is capable of screwing up and dumping the wrong grade or amount, e.g. 8 qts in a 6 qt crankcase or in the case of later Silverados vice versa.
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Current Chevys -'19 Silverado RST;'18 Malibu LT Redline;'18 Traverse Premier Redline<br /><br />Previous&nbsp; Chevys:16 Silverado LT;16 Malibu LT2;'17 Impala;'16 MalibuLT;'15 Camaro LS;'15 Traverse; '13,'12 and '07 Avalanche LTs; '11 Tahoe LT; '13 &'11 Malibu LTs; '08 Trailblazer;'06 Colorado WT..... Chrysler era.....'80 Citation;'75 Impala;'72 Chevelle;'69 Camaro R/T;'65 Impala SS;'62 Nova
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