Who's following the oil life monitor indications with dino and end up with bad UOA ?

[Baveux]

How many less miles are you going to put on you motor on the long run if you follow the OLM indication ?

 

[AtlasFBG2]

That depends on the car.Some cars olm are set for 7500 miles and some are set for double that many miles or more.I read somewhere my cars olm is set for 14,000 miles.I have made it to 11,000 miles useing Amsoil and it still had not gone off.I dont think any dino oil would make it that far and still be good.I have decided to use Supertech synthetic and change it every 7500 miles.If i was to follow the olm i would use Mobil1 and change it when the light comes on.Theres no way i would trust the olm with dino.

 

[Baveux]

With the amount of trouble reported I think that I will follow the OLM indication.
Thanks

 

[olympic]

On my GM vehicles, the OLM changes with driving conditions. Anywhere from 3000 miles under stop and go driving to 8000 miles with all hiway driving. I usualy changed the oil when the light came on but never exceeded 6500 miles with dino.

 

[SWS]

What is GM's OLM algorithm?

 

[XS650]

quote:

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Originally posted by SWS:
What is GM's OLM algorithm?

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Not a specific answer, but this URL gives you an idea what it monitors.

http://www.gm.com/company/gmability...es/news/simplified_maintenance_qa_040104.html

 

[Baveux]

quote:

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Originally posted by olympic:
On my GM vehicles, the OLM changes with driving conditions. Anywhere from 3000 miles under stop and go driving to 8000 miles with all hiway driving. I usualy changed the oil when the light came on but never exceeded 6500 miles with dino.

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Any UOA result to share with us ???

 

[Matt_S]

quote:

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Originally posted by SWS:
What is GM's OLM algorithm?

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Very simply, it counts the number of times a cylinder fires by monitoring the number of crankshaft revolutions. Each firing is then multiplied by a correction factor if the engine is either above or below operating temperature, then subtracted from a pre-programmed number of firings. When that number gets too low, you see "Change Engine Oil" on the dash.

 

[nascarnation]

I think you need to consider your situation.
If you lease or plan to sell before 100,000 miles, any SL dino and the OLM will most likely get you there OK for the lowest out of pocket cost.
If you expect a long term relationship, syns changed at 5-7000 seems like a good plan.

 

[4.8 Silverado]

My Oil change light came on at 9200 miles. I changed my oil at 10,700 miles and did a UOA on it and still had another 2 to 3 thousand miles left on it.Oil used was Mobil 1 15/50.The monitor is not accurate with synthetics.

 

[Baveux]

quote:

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Originally posted by nascarnation:
I think you need to consider your situation.
If you lease or plan to sell before 100,000 miles, any SL dino and the OLM will most likely get you there OK for the lowest out of pocket cost.
If you expect a long term relationship, syns changed at 5-7000 seems like a good plan.

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Right on !!!

I like to change car every 5 to 7 years , so who cares if there is a bit of varnish !!!

On the other hand we have no scientific proof as far as I know that changing oil at 5000 miles on todays car is a guaranty of a long engine life.As long as you dont plug the engine with sludge , and as long as your oil analysis shows low wear metal you're ok for many many years and miles of service.

Its a very interesting board here but man we can get overboard sometimes in regards of engine oil, we are probably not taking care of ourself like we take care of our engine !!!

 

[Matt89]

quote:

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we are probably not taking care of ourself like we take care of our engine !!!

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Amen. I try hard not to think about the sludge and varnish that my heart is pumping around all day...

Now, if they come up with synthetic blood I'd be down for that. Probably wouldn't extend the interval without a UOA...

 

[Robbie Alexander]

quote:

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Originally posted by Baveux:
How many less miles are you going to put on you motor on the long run if you follow the OLM indication ?

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Brotherinlaw has several cars he put over the 300K level with Havoline.... no testing... cost to much he says and I can't argue the fact all motors seem strong with over 300++++++ K on every one. But to his credit they are mainly all OTR