Oil Life Monitor vs. Dealer Recommended Oil Change

[Merkava_4]

Originally Posted By: oldmaninsc
Do you suppose that the engineers at Ford knew what they were doing and ran a few tests before recommending it?


The Ford engineers over in Australia are smarter, they recommend 5W-30 for the same car.

 

[kschachn]

Originally Posted By: Merkava_4
The Ford engineers over in Australia are smarter, they recommend 5W-30 for the same car.


Why? You can tie in your answer to my previous question above, and to oldmaninsc's similar question if you wish.

If you can (and this may be asking too much, I realize) please stick to a sound technical reason rather than nonsense punctuated with emoji.

 

[lubricatosaurus]

Originally Posted By: JSRT4
Is the oil life monitor the best way to judge oil change intervals until such time as I can get a UOA ?.
I did find out Chrysler Jeep has used smart oil change warning lights since about 2008, so do use it for best results. Not just based on dumb time and mileage estimates.

 

[JSRT4]

Originally Posted By: lubricatosaurus
Originally Posted By: JSRT4
Is the oil life monitor the best way to judge oil change intervals until such time as I can get a UOA ?.
I did find out Chrysler Jeep has used smart oil change warning lights since about 2008, so do use it for best results. Not just based on dumb time and mileage estimates.


I agree that the OLM seems to have some intelligence to it, as the first winter OCI has been much shorter than the summer ones. It also seems to factor in idling, and perhaps knows the difference between highway driving and city driving ?.

 

[Merkava_4]

Originally Posted By: kschachn
Why? You can tie in your answer to my previous question above, and to oldmaninsc's similar question if you wish.

If you can (and this may be asking too much, I realize) please stick to a sound technical reason rather than nonsense punctuated with emoji.


OK.....................what does " emoji " mean ? I haven't heard that one before.

 

[lubricatosaurus]

Originally Posted By: JSRT4
I agree that the OLM seems to have some intelligence to it, as the first winter OCI has been much shorter than the summer ones. It also seems to factor in idling, and perhaps knows the difference between highway driving and city driving ?.

From what I read about Chrysler Jeep's OLM, it does appear to be comparable to GM's software algorithms which first pioneered the smart OLM concept over 20 years ago. It looks at conditions from sensor information as you drive, totally trustworthy. It does account for city driving and highway driving, warm-up cycles, etc. (Only thing it doesn't take into account is contamination from coolant or too much dust getting in from bad seals.)

 

[stchman]

To the OP:

Run the viscosity that the manufacturer recommends for the interval the manufacturer recommends contrary to what Merk says. Merk isn't going to pay for the repair bill if the manufacturer denies warranty for using wrong viscosity.

5000km is absurd for PP, ~7500 miles should be the OCI.

The only thing I would keep an eye on is the oil level as Chrysler has said that 1 quart per 1000 miles is considered "acceptable" usage.

The dealer wants you back in more frequently as they get more money of you change your oil more often.

 

[stchman]

Originally Posted By: Merkava_4
Originally Posted By: oldmaninsc
Where did anyone say they were afraid of 10W-30?


Anybody who's reluctant to use 10W-30 in their 0W-20/5W-20 specified car is afraid of 10W-30. They will never tell you why they won't use 10W-30 other than to say that it's not the recommended grade in their owners manual. I'm left to wonder what's really going on in their imagination.

Yes, makes me wonder WHY someone wouldn't want to violate their warranty. Warranties are made to be voilated.

Originally Posted By: Garak
Originally Posted By: Merkava_4
Anybody who's reluctant to use 10W-30 in their 0W-20/5W-20 specified car is afraid of 10W-30.

Some people don't live in California, you know.

That's a good thing, I would have to get rid of most of my firearms and most of the magazines they use as Californians think they are "dangerous".

Originally Posted By: Merkava_4
Originally Posted By: oldmaninsc
Do you suppose that the engineers at Ford knew what they were doing and ran a few tests before recommending it?


The Ford engineers over in Australia are smarter, they recommend 5W-30 for the same car.


Only because they agree with you.

 

[TiredTrucker]

While I suppose that GM has some software "algorithms" thing going on, and I don't necessarily mistrust what the OLM is saying, I have also noticed that for a certain group of vehicles, say the pickups, it doesn't matter the engine or the work load put on the pickup, the OLM seems to be almost as regular as clockwork on it's countdown. Almost to the level of being nothing more than a mile count off setup. My 2013 1500 5.3L and my 2015 2500 6.0L, virtually identical in OLM tick off to 10%. Not a major concern, as there are aspects that the OLM cannot account for so I just change the oil at 6000 miles.

 

[kschachn]

Of course it may also mean that the condition of the oil is similar regardless of how differently you may think the driving has affected it.

If so, your fixed 6000 mile OCI assumes the exact same thing, right?

Originally Posted By: TiredTrucker
While I suppose that GM has some software "algorithms" thing going on, and I don't necessarily mistrust what the OLM is saying, I have also noticed that for a certain group of vehicles, say the pickups, it doesn't matter the engine or the work load put on the pickup, the OLM seems to be almost as regular as clockwork on it's countdown. Almost to the level of being nothing more than a mile count off setup. My 2013 1500 5.3L and my 2015 2500 6.0L, virtually identical in OLM tick off to 10%. Not a major concern, as there are aspects that the OLM cannot account for so I just change the oil at 6000 miles.

 

[WellOiled]

Originally Posted By: lubricatosaurus
Originally Posted By: JSRT4
I agree that the OLM seems to have some intelligence to it, as the first winter OCI has been much shorter than the summer ones. It also seems to factor in idling, and perhaps knows the difference between highway driving and city driving ?.

From what I read about Chrysler Jeep's OLM, it does appear to be comparable to GM's software algorithms which first pioneered the smart OLM concept over 20 years ago. It looks at conditions from sensor information as you drive, totally trustworthy. It does account for city driving and highway driving, warm-up cycles, etc. (Only thing it doesn't take into account is contamination from coolant or too much dust getting in from bad seals.)


I don't think the OLM knows the quality of the oil filter and oil that you use.

If you use manufacturer recommended parts or parts that observe manufacturer's specifications and follow the OLM, then the warranty remains intact.

 

[lubricatosaurus]

Originally Posted By: WellOiled
I don't think the OLM knows the quality of the oil filter and oil that you use.
OLM assumes the minimum quality of oil, based on the worst oil you could use under the spec. Very true if you use a full synthetic, you're actually changing the oil too often. How much margin you have is up for guesswork though.