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Old 11-27-2012, 10:27 AM   #31
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I changed mines twice and both times I don't remember when I've change it! SO BEAT THAT!

(note: just broke 4000 miles a couple days ago)

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Old 11-27-2012, 10:46 AM   #32
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i go by the oil ghange lite,,, did a change this past weekend,,, B-trip odometer ( witch i use to see how far between changes ) said 5200,, what is about normal for me,,, wifes pontiac goes about 4K ,,, she has very short trips and tons of traffic..

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Old 11-27-2012, 10:47 AM   #33
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Mine came on yesterday at 8500 miles. I changed it around 3 but never reset the light. Oil still looks fresh. Mobile 1 15,000.
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Old 11-27-2012, 11:01 AM   #34
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Mine came on at 3500, seemed a little soon for the kind of driving I did.
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Old 11-27-2012, 11:22 AM   #35
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Quote:
Originally Posted by TrueBlueJK
With all the head issues out there I wouldn't even chance the oil going more than 2k miles (non synthetic of course). And muddybruce, please don't bring your jeep to jiffy lube.
Seriously?
How do those relate? School me
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Old 11-27-2012, 11:25 AM   #36
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Quote:
Originally Posted by TrueBlueJK
With all the head issues out there I wouldn't even chance the oil going more than 2k miles (non synthetic of course). And muddybruce, please don't bring your jeep to jiffy lube.
2K?!
Do you pour out your coffee when it's 3/4 full too
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Old 11-27-2012, 11:33 AM   #37
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Quote:
Originally Posted by DuneYeti
Mine came on at 3500, seemed a little soon for the kind of driving I did.
What kind of driving did you do?
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Old 11-27-2012, 11:53 AM   #38
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Originally Posted by MTH View Post
Neither.

It's an algorithm. The computer is constantly doing a little math formula based on the number of times you start the engine along with some information about your driving habits. When it concludes the engine oil is probably toast, it dings.

So if you don't reset the oil change indicator when you do a change, it has no idea you changed the oil and could go off at any time.

There are no sensors to speak off. If you drained all the oil, reset the light, and forgot to put new oil back in, the computer would think all was well as far as the oil is concerned.
Hey Mike,
do you know how to re-set that computer ?
I am about to change mine at 5 K.
I did first at 600 ml, after that I went with Mobil 1 at 1,700, and now I am planning to change every 5 K.
It's easy to remember
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Old 11-27-2012, 11:56 AM   #39
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Mine comes on around 2000 miles after i reset it. But it idles a lot and most of the time its in use its off road in 4lo.
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Old 11-27-2012, 12:04 PM   #40
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Originally Posted by 109 Rider View Post
Hey Mike,
do you know how to re-set that computer ?
I am about to change mine at 5 K.
I did first at 600 ml, after that I went with Mobil 1 at 1,700, and now I am planning to change every 5 K.
It's easy to remember
It's in your owners manual.

But with the pre-2012 3.8 engines, you just turned the key forward two clicks (just one shy of starting the engine), depressed the gas pedal completely to the floor and completely up three times within 10 seconds, and then turned the key into the off position.

Simple.

Not sure if the 2012s and onward are the same. I believe it is.
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Old 11-27-2012, 12:17 PM   #41
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Its the same with 3.6 too. I just changed oil on mine on Wednesday.
Oddly enough, my light came on that day after I changed it. Did the ol mash the pedal thing and it turned right off
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Old 11-27-2012, 12:44 PM   #42
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Thanks guys !!
I'll have to read the manual.
I'll have to figure out is this also the procedure if I change the oil and the light did NOT come on. Do I go through this pedal pumping thing (resetting) even if the light didn't come on ?
The way I change my oils - I would have a heart attack if my oil light comes on.
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Old 11-27-2012, 01:05 PM   #43
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Originally Posted by 109 Rider View Post
Thanks guys !!
I'll have to figure out is this also the procedure if I change the oil and the light did NOT come on. Do I go through this pedal pumping thing (resetting) even if the light didn't come on ?
The way I change my oils - I would have a heart attack if my oil light comes on.
Yes, you would go through the procedure even if changed your oil before the light came on.

As noted earlier, the light is just based on an algorithm. There are no sensors to speak off.

The computer uses a formula based on the number of times you start the engine along with some information about your driving habits. When it concludes the engine oil is probably toast, it dings. So if you don't reset the oil change indicator when you do a change (regardless of whether the light came on), the computer has no idea you changed the oil and will assume you have not.

No need for a heart attack.

The converse situation also true--if you never change your oil but simply continue to reset the computer every time the light dings, your computer will assume that you're running clean oil every time even as you rack up tens of thousands of miles on a single change.
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Old 11-27-2012, 01:08 PM   #44
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Originally Posted by MTH View Post
Yes, you would go through the procedure even if changed your oil before the light came on.

As noted earlier, the light is just based on an algorithm. There are no sensors to speak off.

The computer uses a formula based on the number of times you start the engine along with some information about your driving habits. When it concludes the engine oil is probably toast, it dings. So if you don't reset the oil change indicator when you do a change (regardless of whether the light came on), the computer has no idea you changed the oil and will assume you have not.

No need for a heart attack.

The converse situation also true--if you never change your oil but simply continue to reset the computer every time the light dings, your computer will assume that you're running clean oil every time even as you rack up tens of thousands of miles on a single change.
Thanks Mike !!
Now I got it. No heart attack for me
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Old 12-31-2012, 10:43 AM   #45
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Mine came on yesterday at 8500 miles.
Mine is at 6500 since an early September build and still no light. Anybody seen theirs go past 8500? Surely there is a max mile or max time in the program. Mine is a daily driver with almost no short trips and one trailer haul for about 180 miles. I expect mine to come on soon.

From the sound of most comments in this thread it looks like many are changing their oil too soon. The algorithms are based on very good data collected over decades of automotive technology. I doubt that any manufacturer would actually tell their customers to wait too long for an oil change. Warranty repairs are tough on the bottom line. Reliability issues are tough on reputations and future earnings potential.

Then again, when the Feds will bail you out maybe Chrysler doesn't give a shit after all.
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Old 12-31-2012, 11:08 AM   #46
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Changing Oil

I believe the oil light comes on based on the viscosity of the oil measured at the pump. My had break in oil that I changed at 3,500. I use Pensoil Silver and have had good luck using it in my 90YJ.
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Old 12-31-2012, 11:08 AM   #47
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I did not reset mine after an oil change because I was also curious...mine went off right around 7900 miles or so.
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Old 12-31-2012, 12:14 PM   #48
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Mine in the '12 came on at 9,400 miles. I already had an oil change planned for this week anyhow so I'll reset it at that time.

When my free oil changes from the dealership are gone in the spring, I'm going to start servicing the Jeep myself on 5K - 7K intervals.
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Old 12-31-2012, 12:36 PM   #49
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I believe the oil light comes on based on the viscosity of the oil measured at the pump. My had break in oil that I changed at 3,500. I use Pensoil Silver and have had good luck using it in my 90YJ.
oil change sensor is not that smart.
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Old 12-31-2012, 01:52 PM   #50
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What break in oil???
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Old 12-31-2012, 03:37 PM   #51
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I'm way over 30,000 miles and my light hasn't come on yet!
This is so cool that I can go this long without needing to change the oil. What a great rig!






Just kidding... My light just came on at 7500, but I've already done two changes. I switched to Mobile 1 at 5,000 and won't do another till 10,000 unless something pops up that indicates that I need another oil change. This is my 6th vehicle that I have done 5,000 changes with synthetic. it has worked well for me, so that is what I will continue to do.
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Old 12-31-2012, 03:59 PM   #52
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Not much help I know... However, I change at 5K just to keep the same schedule as tire rotation. I've never seen my "change oil" light, or display thingy...
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Old 12-31-2012, 11:03 PM   #53
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Quote:
Originally Posted by COStrider View Post
I used to do changes every 3,000 on every vehicle including diesels but finally decided many people had there oil assessed by labs and read enough articles to debunk the 3,000 mile bs.
Spot on. The 3k is a myth, that dealerships used to make money. Now that oil is a concern to the environment, it's being debunked with more enthusiasm. Earlier, it was just a little money..

Quote:
Originally Posted by COStrider View Post
If the engine fails, I have a warranty and followed the advice of the service manager (I will take accountability and not blame the service managers recommendation or blame the computer).
My dealer told me that if I change the oil only when the light comes on, the warranty will be fully respected. The user's guide also calls out that you no longer need to change oil on a schedule but just need to change it only when the light comes on.

Quote:
Originally Posted by Dale_K View Post
I don't believe there is any "sensor" in the system. It just counts revs and applies weighting factors for short trips, etc.
Yes; afaik there's NO sensor. It's duty cycle based. How I understood this was the light is supposed to come on after a certain number of cycles of the engine. As to what that number is, I don't know. But if your jeep is new / if you make her work, you want to keep an eye on the oil. But then again, if it goes toast, jeep should cover that under warranty as my dealer puts it.

The engine cycles also explains why some of you get the light earlier than others. If you go down to four low, there's 2.6 (or 4 if you have a rubi) times as many cycles per mile, as there is in 2 hi / 4 hi. Likewise city vs highway also factors in..

Again I must point out that duty cycle based is 100% certain; it's only me guessing that that correlates with the number of cycles the engine sees (the RPM integral).

Quote:
Originally Posted by Matador View Post
Regular conventional oil doesn't come close to breaking down for at least 5k. Changing your oil sooner than that interval is just a waste of money and environmentally/patriotically irresponsible.
Yeah, my plan was wait for the light, but do it every 5k/6months if it doesn't come on.
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Old 01-03-2013, 04:02 PM   #54
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Now the light is on, how do I reset it. My comes on at 3,000 miles.
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Old 01-03-2013, 04:26 PM   #55
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Quote:
Originally Posted by Rob309 View Post
Now the light is on, how do I reset it. My comes on at 3,000 miles.
From pg 325 of your 2013 owners manual:

Your vehicle is equipped with an engine oil change
indicator system. The “Oil Change Required” message
will flash in the EVIC display for approximately 10 seconds
after a single chime has sounded to indicate the next
scheduled oil change interval. The engine oil change
indicator system is duty cycle based, which means the
engine oil change interval may fluctuate dependent upon
your personal driving style.

Unless reset, this message will continue to display each
time you turn the ignition switch to the ON position. To
turn off the message temporarily, press and release the
MENU button. To reset the oil change indicator system
(after performing the scheduled maintenance), perform
the following procedure:


1. Turn the ignition switch to the ON position.
Do not start the engine.
2. Fully depress the accelerator pedal slowly three times
within 10 seconds.
3. Turn the ignition switch to the LOCK position.

NOTE:
If the indicator message illuminates when you
start the vehicle, the oil change indicator system did not
reset. If necessary, repeat this procedure.



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Old 01-03-2013, 04:31 PM   #56
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Awesome, thank you.
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Old 01-03-2013, 08:26 PM   #57
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Mine came on today at just over 3500 miles. However mine is a 2012 that i purchased in September. It sat on the dealer lot for almost a year.
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Old 02-27-2015, 10:10 AM   #58
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i wait till it comes on mine just came on or the check engine light did it came on on tuesday i have an appointment to get the jeep in for service this monday. im still driving around. im at 6000 miles its my first time doing anything on the jeep im not a car buff so i do stuff when lights come on

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