Oil Life Display
Thread Starter
Racer
Joined: Feb 2003
Posts: 262
Likes: 0
From: Lumberton TX
Oil Life Display
Morning
Hope you young guys have a great week at work. How does the oil life percentage display arrive at it's numbers? Thanks to each who share your knowledge on this forum. All who read it have been helped in some way. Frank
Hope you young guys have a great week at work. How does the oil life percentage display arrive at it's numbers? Thanks to each who share your knowledge on this forum. All who read it have been helped in some way. Frank
Team Owner
Joined: Mar 2001
Posts: 21,325
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From: small town in S.E Pa. PA
St. Jude Donor '03-'04
AS an Old guy, I was going to give you the answers you seek, but you left me out of your greeting so, fergetaboutit.,although you have asked this question twice in both C5 forum and have received the answer, here it is again.
http://service.gm.com:8083/gmtechlin...k_MAY_2003.pdf
The Oil life algorithms were written after months and months of testing and analyzing oil samples under all types of conditions. It includes but not inclusive of, rpm, oil temp, load, engine heat cycle starts, that is cold or warm starts, engine run time. It uses a clock system to count down to 0%. Early cars used a 10,000 mile base line while newer C5's 2000+ used 15000 miles as a base line.
http://service.gm.com:8083/gmtechlin...k_MAY_2003.pdf
The Oil life algorithms were written after months and months of testing and analyzing oil samples under all types of conditions. It includes but not inclusive of, rpm, oil temp, load, engine heat cycle starts, that is cold or warm starts, engine run time. It uses a clock system to count down to 0%. Early cars used a 10,000 mile base line while newer C5's 2000+ used 15000 miles as a base line.
Last edited by Evil-Twin; Jan 16, 2006 at 01:19 PM.
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Originally Posted by Evil-Twin
AS an Old guy, I was going to give you the answers you seek, but you left me out of your greeting so, fergetaboutit.,
Welcome to the forum Frank.
I believe it based on the number of starts and time running, is can't measure dirt or oil dilution so I just usually chang my oil every 5000 miles and it has worked great for me.
Another "Old Guy"
Le Mans Master
Joined: Dec 2000
Posts: 9,913
Likes: 1,867
From: Hot Springs AR
And, as yet another Old Guy, I've been using the Oil Life Monitor for the last two oil changes and had the results analyzed by Blackstone labs.
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
Racer
Joined: Nov 2005
Posts: 278
Likes: 0
From: melbourne fl
Originally Posted by VetteDrmr
And, as yet another Old Guy, I've been using the Oil Life Monitor for the last two oil changes and had the results analyzed by Blackstone labs.
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
Le Mans Master
Joined: Dec 2000
Posts: 9,913
Likes: 1,867
From: Hot Springs AR
Umm, I'm not sure why you say that. 5w vs 10w-30 oil changes some of the viscosity parameters Blackstone uses to analyze the oil, but the wear content and additive package are the same.
Have a good one,
Mike
Have a good one,
Mike
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From: SoCal Twin Turbo, Any Questions?
St. Jude Donor '06-'07
Originally Posted by 99 vett babycar
we're ALL old here
im 19, but frank to tell you the truth i think Evil twin was just being sarcastic and saying that he was old, some guys sometimes on here come off as sounding mean but they dont mean it, be sure to look for the little smily faces too, when i was new i got confused too, im not a big computer guy either. WElcome and i hope you got the answer to your question
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Joined: Aug 2001
Posts: 5,364
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From: King George VA
Another old guy here...
GM's description of the system which you might find interesting:
http://www.gm.com/company/gmability/...or_041603.html
GM's description of the system which you might find interesting:
http://www.gm.com/company/gmability/...or_041603.html
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Le Mans Master
Joined: Feb 2002
Posts: 6,937
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From: Waldorf MD
Originally Posted by Evil-Twin
AS an Old guy, I was going to give you the answers you seek, but you left me out of your greeting so, fergetaboutit.,although you have asked this question twice in both C5 forum and have received the answer, here it is again.
http://service.gm.com:8083/gmtechlin...k_MAY_2003.pdf
The Oil life algorithms were written after months and months of testing and analyzing oil samples under all types of conditions. It includes but not inclusive of, rpm, oil temp, load, engine heat cycle starts, that is cold or warm starts, engine run time. It uses a clock system to count down to 0%. Early cars used a 10,000 mile base line while newer C5's 2000+ used 15000 miles as a base line.
http://service.gm.com:8083/gmtechlin...k_MAY_2003.pdf
The Oil life algorithms were written after months and months of testing and analyzing oil samples under all types of conditions. It includes but not inclusive of, rpm, oil temp, load, engine heat cycle starts, that is cold or warm starts, engine run time. It uses a clock system to count down to 0%. Early cars used a 10,000 mile base line while newer C5's 2000+ used 15000 miles as a base line.
ET - is there any significant change in the engine from the early years to 2001 ? I have a 1998, can I reset my Oil Life to zero at 50% without any bad consequences ? I usually go about 6500 miles until 2% left, I once got an oil analysis and it said I could try adding another 1000 miles next oil change.
Team Owner
Joined: Mar 2001
Posts: 21,325
Likes: 3,841
From: small town in S.E Pa. PA
St. Jude Donor '03-'04
Originally Posted by Oldvetter
ET - is there any significant change in the engine from the early years to 2001 ? I have a 1998, can I reset my Oil Life to zero at 50% without any bad consequences ? I usually go about 6500 miles until 2% left, I once got an oil analysis and it said I could try adding another 1000 miles next oil change.
Bill aka ET
Last edited by Evil-Twin; Jan 19, 2006 at 11:23 AM.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
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From: King George VA
Originally Posted by Evil-Twin
The difference is in the PCM and the original algorithms using a base line of 10,000 miles. The engines are very similar. In my opinion, only because your analysis said you could go another 1000 miles, I would not want to tell you to reset your oil life monitor. I understand where you are going. Faking out the Monitor leads to " did I reset at 50%??? " You know how us old guys can get confused. I suggest you run the oil life down to 0%. you then will have a safety blanket. So dont think when it gets down to zero, you have to immediately drop everything and get an oil change.. I would make sure the oil change was done within the week. I dont know how many miles you put on the car in a year, but what you have done so far is great, I would not want you to change mid stream. These cars can go 200K if they are taken care of. I hope this helps you keep up the good work with the car.
Bill aka ET
Bill aka ET
Team Owner
Joined: May 2004
Posts: 26,345
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From: SoCal
Originally Posted by Evil-Twin
These cars can go 200K if they are taken care of. Bill aka ET
This means I am down to 70% on the "Car Life Display".
I can't seem to find this on the DIC..............
DH
Last edited by Dirty Howie; Jan 20, 2006 at 04:57 PM.
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St. Jude Donor '11-'12-'13-'14-'15-'16-'17
Originally Posted by VetteDrmr
And, as yet another Old Guy, I've been using the Oil Life Monitor for the last two oil changes and had the results analyzed by Blackstone labs.
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
Using Mobil 1 10w-30, when I got to 0% remaining oil life, the oil had a decent percentage of it's additive package left, and the impurities were about average. So, it seems like when the OLM gets to 0%, it's time to change the oil. Any sooner and it's:
1. To make you feel more comfortable with your engine
2. A waste of time and money
Pick the one that makes you feel best.
HTH, and have a good one,
Mike
BTW, ET is like those two guys in Second Hand Lions: if they don't shoot you they've got great stories!
