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otcpharm said:
Just wait until the system tells you to change it...no hurry.

Shortest interval I've gotten is 7500 miles (about 12,000km), longest is almost 9000 (about 14,500km).

Oil doesn't look or smell any worse than the stuff I drain from my other vehicles at shorter intervals.

But like GTPGuy82 says - no matter the distance, they still only give it a one year (about 365 days ;) ) lifespan in the book.
Im at 2700 miles on my last change and the oil life system is at 30% already.
Ive never seen it get that low before with only 2700 miles on the oil.
I always change it every 3000 miles regardless since it only costs me $8.
 

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Lucius said:
I just had my oil changed at about 4000 (after an intial 600 mile change). I think the oil life was at like 48%. I get every other change free from the dealer (it really means every 6 months, 3750 miles, within 2 months and 1,000 miles).

Man, 2700 miles and 30 percent. That's crazy.
yeah, usually its between 45-55% with 3000 miles on the oil.
I can't believe I'm going to have 15,000 miles on the car by this saturday and its only 8 months old :eek:
 

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ToniCipriani said:
It depends on temperature, and several other factors, not just distance.

I have around 3500kms and it's showing 34% already.

I'll get it changed sooner anyways, since my first one is free and to flush out engine trash.
yeah i realize that but i drive far enough to burn off any moisture that would normally build up in the oil from driving short distances in the winter.
 

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ToniCipriani said:
It's the last option in the config menu. I don't see how you can accidentally reset it, unless you're REALLY playing with it...
exactly, its not even something you can reset with the car in drive.

I changed the oil today and reset it to 100% and after 70 miles its already down to 95%. There must be something going wrong with that feature on my car.
 

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e2helper said:
You might want to mention it to dealer next time you are there (if not already done).

I have seen a few cases of this. Seems to be related to just the 2006 3.5L.

Your driving pattern might make it especially noticeable. You mentioned a little about that - do you have a pretty regular drive? How far 1-way?
I drive 26 miles one way to work and sometimes have to drive my car to jobsites etc. On most weekends I make trips that are around 50-70 miles one way. I would say that 95% of this driving is at 55-60mph with no stop and go, and the other 5% would be going through town at 25-40mph with minor stop and go.
 

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otcpharm said:
The system is set for any oil that meets the GM spec. for this vehicle.

Synthetic oil meets (exceeds) the spec. so the system is indeed calibrated for synthetics.
What he is saying is that the computer has no idea what type of oil you pour in. The OLS will read the same whether you use regular oil or synthetic. My guess is that the OLS reading only based on speed, temp, engine rpm, and duration.
 

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DocWyeth said:
Now you have me concerned! I have 43% left and over 8.000 miles since the last oil change. What is the problem with the Diver Inormation Center? I have also complained about the built in outside temp readings and the gas economy gauge being incorrect, and not just a little. (05 GT)
I would have changed my oil twice already in 8000 miles.
The DIC OLS is just a reminder for those who don't even know the car takes oil and will warn them eventually that the car needs service.
I had a friend that drove his lease 26k miles before the first oil change. :crazy: I would not want to be the sucker to purchase that after he turned it in.

What problem are you having with the outdoor temp? It will always read wrong when the car is sitting, especially in the summer.
 

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TLS2000 said:
Wrong mate. The OLS is there to prevent people from wasting oil by changing it prematurely.
There will still probably be 85% of us here who will change their oil at certain intervals regardless of what the OLS says. I would never depend on the OLS. Look at the DocWyeth's situation for example. 8000 miles and still showing another 43% before the oil should be changed. Lets say at 14,000 miles it tells him to change his oil. IMHO, that is way to long to go between oil changes.

We use barrels of oil each year on our farm so changing the oil a little early doesn't mean much to me. I would rather extend the life of the engine than the life of the oil.
 

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DocWyeth said:
I know about it sitting in the sun. Any thermometer will do that. The eng. say that within 5 min or a few miles it should be accurate. I have documented mine being off by 5 degrees after 20 min of driving. It happens more often in the sun than cloudy days. They replaced the sensor once. What gripes me is I drive by the dealership every day. I have pulled in to show them and they agree that it is wrong but can't work on it right then and there and then when I take it back they play stupid and say well today it tested ok.

As for the oil sensor, TLS was correct. Read the manual. I just noticed that the gas milage really dropped off so I am going to change it anyway. Not sure if the milage it oil related or gas reformulation related.
5 degree's hotter or colder than ambient?
 
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