Oil change light
#1
Staging Lane
Thread Starter
Oil change light
I purchased a 30th Anniversary TA about 2000 miles ago. I changed the oil soon after I got it. Mobil 1 5w-30. I had an oil change light this morning. Is this something that is triggered by mileage or is it sensing filter restriction or some other issue? If it is just a mileage trigger, how do I reset it?
#7
Pontiacerator
iTrader: (12)
It's more than just a mileage counter. It contains sophisticated algorithms that factor in starting temps, operating temps, engine revs and other parameters to determine oil life. I've had it come on at under 3000 miles in winter and close to 5000 miles in summer. Since you likely didn't reset it when you changed the oil, it's calculating off the last reset by the previous owner.
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#9
#10
Staging Lane
Thread Starter
I hate the "Check Guages" light triggered by low fuel. My other 2 Gen 4's didn't have that feature. And I don't need to be told when to change oil. My MB wagon won't trigger for 13,000 or 14,000 miles. Way too long IMHO.
#13
TECH Enthusiast
On my '99 I'm not so sure there's an any algo at work other than counting miles. It seems to come in around every 3,000 miles. Since I change it the oil annually by 1400 miles, it's of no use to me. Owner's manual doesn't mention anything about variations in OCI's. When I searched the internet for information on my '99, nothing I found suggested it was anything but a mileage counter. The sophisticated oil algo's of today actually do something.
If the OP just had their oil change light come on after approx 2,000 miles, that's not very good. And decent conventional SN oil should be giving you 4K miles or more....unless you short tripping your car to death. And even then, you should get past 2,000 miles with ease. And Mobil 1 5w-30 SN should be good for 6K-10K miles under normal usage. My car never sees a short trip of under 14 miles with most around 16-25 miles. I drive it to fully warm, never idle for more than a couple minutes, and it rarely sees winter temps when driven. Yet my oil counter has reset twice in under 6,000 miles. Makes no sense for anything but the most unsophisticated "timer."
Even using the API SJ/SL oil specs the 1998-2002 cars originally came with, I can't see 2,000-3,000 mile oil changes when you're not seriously short tripping the car. This early GM oil monitor block diagram only considers Oil Temp and RPMs. Not sure if all 1999 vehicles got it. Some certainly did.
http://media.noria.com/sites/archive...aphics_GM3.gif
If the OP just had their oil change light come on after approx 2,000 miles, that's not very good. And decent conventional SN oil should be giving you 4K miles or more....unless you short tripping your car to death. And even then, you should get past 2,000 miles with ease. And Mobil 1 5w-30 SN should be good for 6K-10K miles under normal usage. My car never sees a short trip of under 14 miles with most around 16-25 miles. I drive it to fully warm, never idle for more than a couple minutes, and it rarely sees winter temps when driven. Yet my oil counter has reset twice in under 6,000 miles. Makes no sense for anything but the most unsophisticated "timer."
Even using the API SJ/SL oil specs the 1998-2002 cars originally came with, I can't see 2,000-3,000 mile oil changes when you're not seriously short tripping the car. This early GM oil monitor block diagram only considers Oil Temp and RPMs. Not sure if all 1999 vehicles got it. Some certainly did.
http://media.noria.com/sites/archive...aphics_GM3.gif
Last edited by Firebrian; 03-04-2017 at 09:29 PM.
#14
On my '99 I'm not so sure there's an any algo at work other than counting miles. It seems to come in around every 3,000 miles. Since I change it the oil annually by 1400 miles, it's of no use to me. Owner's manual doesn't mention anything about variations in OCI's. When I searched the internet for information on my '99, nothing I found suggested it was anything but a mileage counter. The sophisticated oil algo's of today actually do something.
If the OP just had their oil change light come on after approx 2,000 miles, that's not very good. And decent conventional SN oil should be giving you 4K miles or more....unless you short tripping your car to death. And even then, you should get past 2,000 miles with ease. And Mobil 1 5w-30 SN should be good for 6K-10K miles under normal usage. My car never sees a short trip of under 14 miles with most around 16-25 miles. I drive it to fully warm, never idle for more than a couple minutes, and it rarely sees winter temps when driven. Yet my oil counter has reset twice in under 6,000 miles. Makes no sense for anything but the most unsophisticated "timer."
Even using the API SJ/SL oil specs the 1998-2002 cars originally came with, I can't see 2,000-3,000 mile oil changes when you're not seriously short tripping the car. This early GM oil monitor block diagram only considers Oil Temp and RPMs. Not sure if all 1999 vehicles got it. Some certainly did.
http://media.noria.com/sites/archive...aphics_GM3.gif
If the OP just had their oil change light come on after approx 2,000 miles, that's not very good. And decent conventional SN oil should be giving you 4K miles or more....unless you short tripping your car to death. And even then, you should get past 2,000 miles with ease. And Mobil 1 5w-30 SN should be good for 6K-10K miles under normal usage. My car never sees a short trip of under 14 miles with most around 16-25 miles. I drive it to fully warm, never idle for more than a couple minutes, and it rarely sees winter temps when driven. Yet my oil counter has reset twice in under 6,000 miles. Makes no sense for anything but the most unsophisticated "timer."
Even using the API SJ/SL oil specs the 1998-2002 cars originally came with, I can't see 2,000-3,000 mile oil changes when you're not seriously short tripping the car. This early GM oil monitor block diagram only considers Oil Temp and RPMs. Not sure if all 1999 vehicles got it. Some certainly did.
http://media.noria.com/sites/archive...aphics_GM3.gif
#15
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No, it's only the coolant temp gauge and sender that changed in '99+ to being more of a dummy gauge in the temp range of ~185-230°F. Functionality of all other gauges was not affected or changed.
Frankly I wouldn't consider that sparingly at all. I can't think of many scenarios where someone would actually need to change a good synthetic oil more often than 2-3 times per year. That's about the maximum that should ever be needed.
Frankly I wouldn't consider that sparingly at all. I can't think of many scenarios where someone would actually need to change a good synthetic oil more often than 2-3 times per year. That's about the maximum that should ever be needed.
#16
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iTrader: (12)
On my '99 I'm not so sure there's an any algo at work other than counting miles. It seems to come in around every 3,000 miles. Since I change it the oil annually by 1400 miles, it's of no use to me. Owner's manual doesn't mention anything about variations in OCI's. When I searched the internet for information on my '99, nothing I found suggested it was anything but a mileage counter. The sophisticated oil algo's of today actually do something.
As I mentioned above and Need4 corroborates or his 99, the interval on my 2000 varies depending on usage.
#17
TECH Enthusiast
The engineer that developed it was a woman, and she described the various parameters that it monitors and the algorithms that integrate them in detail. It's definitely more than a mileage counter.
As I mentioned above and Need4 corroborates or his 99, the interval on my 2000 varies depending on usage.
As I mentioned above and Need4 corroborates or his 99, the interval on my 2000 varies depending on usage.
I don't do extended highway driving so the OLM thinks that my 15-25 mile drives around town during spring/summer/fall at an average of 2000 rpm is severe service. That's fine. I change it annually with 1000-1400 miles where the oil is still probably quite fresh.
#18
Save the manuals!
iTrader: (5)
It's more than temp and RPM. I was alive in 1999 and can testify that we were more civilized than that. We were definitely walking upright, making fire, and using utensils by that time!
Here's a circa 1999 article that gives more details, has links go graphs, etc. http://machinerylubrication.com/Read...-of-oil-change
For $27, this paper should give you the actual concrete details: http://papers.sae.org/870403/
Here's a circa 1999 article that gives more details, has links go graphs, etc. http://machinerylubrication.com/Read...-of-oil-change
For $27, this paper should give you the actual concrete details: http://papers.sae.org/870403/
#19
TECH Enthusiast
It's more than temp and RPM. I was alive in 1999 and can testify that we were more civilized than that. We were definitely walking upright, making fire, and using utensils by that time!
Here's a circa 1999 article that gives more details, has links go graphs, etc. http://machinerylubrication.com/Read...-of-oil-change
For $27, this paper should give you the actual concrete details: http://papers.sae.org/870403/
Here's a circa 1999 article that gives more details, has links go graphs, etc. http://machinerylubrication.com/Read...-of-oil-change
For $27, this paper should give you the actual concrete details: http://papers.sae.org/870403/
I drive my 1999 SS about 15-25 miles per trip, 50X per year. I've received 2 oil service lights over 6,000 miles so far. iI reset them when they come. I actually change the oil annually with probably tons of TBN left. Last year I researched the current and future OLM systems to see how sophisticated they had become. I posted my findings on Bitog on what one author felt was the ideal system. Maybe time to go back and refresh myself on that model. My 1998 Z28 (owned from 2001-2009) I don't think had an OLM. At least I don't recall following oil changes other than by every 3,000 miles no matter what.
I agree with standing upright and making fire in 1999. Not so sure about "using utensils" though.
Last edited by Firebrian; 03-08-2017 at 07:36 PM.
#20
Save the manuals!
iTrader: (5)
They talk about a concept of "load", which is something I'm left wanting to understand more. I would think RPM (the speed of the revolutions) must have some bearing in that, even if the revolutions have a greater bearing on the load than their numbers over time.
Call me a pioneer! lol