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  #13  
Old 09-27-2010, 04:47 PM
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Re: Oil Change Interval

That indicator may get to be annoying for those of us that use synthetics, and don't believe in a "normal" interval when doing so. It doesn't seem to take that into account.
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  #14  
Old 09-27-2010, 04:53 PM
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Re: Oil Change Interval

Just reset it I guess. You have two trip meters so I use the second one to track mileage for oil changes since there is no mileage indicator countdown for oil changes on this jeep. I would be interested to see how the "duty cycle" is determined whether from a sensor or just from fuel flow, temp, and other data in the computer. I can tell you that for 1000 miles with some towing the oil I drained looked VERY clean still compared to many vehicles I have had. Cant wait to see how it looks at 3000 and 4000 mile intervals now that it is synthetic. Be interesting to see how the duty cycle determines it needs to be changed as well.
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Old 09-27-2010, 05:36 PM
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Re: Oil Change Interval

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Originally Posted by jpsmith View Post
When I first brought home the WK2 (5.7L) I was please to see in the owner's manual that the oil change interval was 8000 miles. However, I recently hit 3500 and now the EVIC complains that it's due for an oil change every time I start the car. So, which is it - 3000 or 8000?
1st off, that is awesome that the oil change is at 8000. I wish my Liberty could last that long.... that would be 3-4 months of driving for me.

2nd, Change your oil at 8000 miles or when the EVIC tells you too, which ever comes 1st.
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Old 09-27-2010, 05:52 PM
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Re: Oil Change Interval

Great thread as this is something I really find interesting. First of all, i think its a scam. I'm pretty sure the EVIC is set by the dealership before it is delivered. I could be wrong, but why is it that every EURO spec car (domestic or US), has oilchanges once a year or 10k miles? Apart from having a Wk2 Laredo, I also have a 911 Carrera S. The dealership in Seattle won't even change the oil after a full track day. The always say 12 months or 12k miles whichever comes first. So back to my first point, I think it is a scam to drive business do the dealers. my 2 cents.
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Old 09-27-2010, 06:24 PM
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Re: Oil Change Interval

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Great thread as this is something I really find interesting. First of all, i think its a scam. I'm pretty sure the EVIC is set by the dealership before it is delivered. I could be wrong, but why is it that every EURO spec car (domestic or US), has oilchanges once a year or 10k miles? Apart from having a Wk2 Laredo, I also have a 911 Carrera S. The dealership in Seattle won't even change the oil after a full track day. The always say 12 months or 12k miles whichever comes first. So back to my first point, I think it is a scam to drive business do the dealers. my 2 cents.
The EVIC is really hurting dealerships because you get to drive longer without seeing them (more than 3000 miles). I change my oil at 1800 miles due to it being a new engine. Now I have 6800 miles and the light hasn't came on. I had to drive my salesman Jeep Liberty demo for the day while the dealership put on my remote start and hutch. I think he had 2500 miles on it and the light was on. The light only comes on when the oil is bad. The dealership have nothing to do with it.
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  #18  
Old 09-27-2010, 07:27 PM
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Re: Oil Change Interval

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Originally Posted by whatevrworks View Post
I would be interested to see how the "duty cycle" is determined whether from a sensor or just from fuel flow, temp, and other data in the computer.

I'm sure it's determined by the computer given the type of driving you've done- how long your trips tend to be, average speeds, stop and go vs. highway, etc. Sensors are expensive and just don't seem to be used on many vehicles.

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I think it is a scam to drive business do the dealers. my 2 cents.
I don't know about that. Keep in mind, your Porsche probably has extremely tight engine tolerances- not that modern engines have a lot of slop, but the higher performance the vehicle, the assumption goes that the engineering and quality control keeps things within a might tighter range. I'm also guessing your 911 uses full synthetic oil, these Jeeps have recommendations based on somebody using the cheapest API certified oil the owner might get his/her hands on. Besides, you don't HAVE to get things done at the dealer, and they know that full well. Most dealers will do oil changes for less than $25. Given standard prices for oil and filters, they won't be making much at that price, if anything.

I changed the oil in my Patriot at 5000 miles using regular dino oil- IMO, that's well within the capabilities of the oil. For this thing, I'm likely to do an oil change at about 2000 miles or so, then I'll probably just follow the EVIC recommendation from then on. Sometimes I'll have the dealer do it, sometimes I'll do it myself.
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Old 09-28-2010, 08:07 AM
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Re: Oil Change Interval

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...I also have a 911 Carrera S. The dealership in Seattle won't even change the oil after a full track day....
Don't compare a vehicle that holds 7 quarts to one that holds almost twice the amount. That's why the intervals differ so much. That, and standard oil vs synthetics.
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Old 09-29-2010, 12:28 AM
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Re: Oil Change Interval

The oil companies still say 3,000 miles! That might be the biggest scam.
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  #21  
Old 09-29-2010, 08:43 AM
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Re: Oil Change Interval

And shampoo companies tell you to wash your hair twice!
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Old 09-29-2010, 09:54 AM
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Re: Oil Change Interval

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The oil companies still say 3,000 miles! That might be the biggest scam.
Depends on the company. I know Mobil, on their "Mobil Clean" line, puts at least 5000 mile recommendations right in the name. But then, they have no idea what vehicle you're putting the oil into, so they have to go with the safe choice. In my eyes, it's more the parts stores and people performing the changes (be they quick lube places or mechanics/dealerships) pushing the 3000 mile interval.
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Old 09-29-2010, 10:08 AM
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Re: Oil Change Interval

i hear you guys, but that still does not explain why I exactly on the mark 4000 miles get the oilindicator to light up since I put Pennzoil Ultra in at 2600. I'm sure that oil in particular is better than 1400 miles....so does this rig really have a sensor? doubt it.
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  #24  
Old 09-29-2010, 11:00 AM
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Re: Oil Change Interval

Mine came on at exactly 3500. Maybe it has a sensor combined with driving history that, when triggered, waits until the next even increment of 500 to notify you?
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