OLM and COL, No clue before now, now what?

[Robbabob]

I had heard about the Change Oil Light, but didn't realize there was an OLM that triggers the light when the truck calculates it should need the oil changed. I guess I thought it literally looked at the oil and was going to tell me when it got too dirty. The challenge: Just changed the oil a few weeks ago (about 800 hundred highway miles and 200 city). Now that I know what the OLM does, it's telling me to change the oil for the first time ever (I've changed it twice already in 10 months), I feel like I'm in a pickle.

Do I have to change the oil again so it knows right when I reset it, or just reset it and let is think it is fresh?

Side question: Can you reset the OLM if you change the oil early? ~What's there to reset if it's not alarming?~ I know, why change it before the light tells me to.

Thanks in advance.

 

[Blckshdw]

I had heard about the Change Oil Light, but didn't realize there was an OLM that triggers the light when the truck calculates it should need the oil changed. I guess I thought it literally looked at the oil and was going to tell me when it got too dirty. The challenge: Just changed the oil a few weeks ago (about 800 hundred highway miles and 200 city). Now that I know what the OLM does, it's telling me to change the oil for the first time ever (I've changed it twice already in 10 months), I feel like I'm in a pickle.

Do I have to change the oil again so it knows right when I reset it, or just reset it and let is think it is fresh?

Side question: Can you reset the OLM if you change the oil early? ~What's there to reset if it's not alarming?~ I know, why change it before the light tells me to.

Thanks in advance.

Yeah, you were supposed to reset the OLM when you changed your oil. Those who have the DIC can do it through there, otherwise you have to do the alternate method. Turn the key to ON, then press the gas pedal to the floor, 3 times within 5 seconds. The light should turn off, and you're done.

 

[Envoy_04]

Yeah, you were supposed to reset the OLM when you changed your oil. Those who have the DIC can do it through there, otherwise you have to do the alternate method. Turn the key to ON, then press the gas pedal to the floor, 3 times within 5 seconds. The light should turn off, and you're done.

A second tip for all you guys without the DIC. When resetting the OLM do as Blckshdw said and turn the key to on, press the gas pedal all the way to the floor three times within five seconds, and the light should blink at you if it is reset. If it doesn't, turn the key to off and then back to on and repeat the cycle until the light flashes to signal the OLM is reset. It may take a few tries, always seems to for me. Just my

 

[Robbabob]

I appreciate the input. Maybe you did answer part of the question. I guess I can reset the OLM even when the COL is not illuminated.

But I'm still uncertain if I need to change the oil to get them synchronized. Am I gambling to leave the 1,000 miles of city and highway miles on it when the system thinks I just changed the oil?

conscience saying ~spend the $30 and know you'll be taken care of~

Thanks again!

 

[The_Roadie]

To be perfectly synchronized, change the oil. But most folks don't *quite* trust the OLM enough to let it go the typical 10K before they go all Nervous Nellie and change it early. Without the DIC, you'd need a decent scan tool to look at the percent of life left.

 

[Envoy_04]

I don't go by the OLM, I change the oil by mileage like folks have done for years. When I change the oil I reset the monitor so the light doesn't come on.

 

[AtlWrk]

You can reset the OLM at any time. If you're really worried about it just put however many miles you'd normally run your oil then change it and reset the OLM then. Dumping 1k old oil just to synch the OLM is a bit silly IMO. We'll try to avoid another oil life flame war here but for what it's worth I get 10-12k miles out of my oil based on the OLM.

 

[meerschm]

Remember you also are supposed to change after a year, regardless of what the monitor says.

I say reset the monitor, and do it again when you change your oil!

what did you use for your last two changes for an interval?

 

[szieziel]

To be perfectly synchronized, change the oil. But most folks don't *quite* trust the OLM enough to let it go the typical 10K before they go all Nervous Nellie and change it early. Without the DIC, you'd need a decent scan tool to look at the percent of life left.

I use the Torque android app to check the percent on my '03.
PID:22119f
equation:A/2.55

 

[Mark20]

A second tip for all you guys without the DIC. When resetting the OLM do as Blckshdw said and turn the key to on, press the gas pedal all the way to the floor three times within five seconds, and the light should blink at you if it is reset. If it doesn't, turn the key to off and then back to on and repeat the cycle until the light flashes to signal the OLM is reset. It may take a few tries, always seems to for me. Just my

I've had the light take several seconds to blink after doing the reset sequence, maybe 5 to 10 seconds though I've never really counted.

To be perfectly synchronized, change the oil. But most folks don't *quite* trust the OLM enough to let it go the typical 10K before they go all Nervous Nellie and change it early. Without the DIC, you'd need a decent scan tool to look at the percent of life left.

You can program a Scan Gauge to display the OLM value, they provide the "formula".

As you've probably learned the OLM starts with a profile for clean new dino oil and counts off its life based on how hard the vehicle is driven, temperature its started at and several other items. The OLM typically trips about 7500 miles IIRC. So if you go 5000 - 6000 miles on the current oil you make good use of it and ease your mind. And if you used synthetic oil, you could probably go until the il change light illuminates.

 

[Robbabob]

To be perfectly synchronized, change the oil.

Gotcha

You can reset the OLM at any time.

Cool to know.

I use the Torque android app to check the percent on my '03.
PID:22119f
equation:A/2.55

Got it too, I'll check this out when the wife gets home from work. I assume you're saying to take the value within 22119F and divide by 2.55 to get the percent of life remaining (or consumed). Should be obvious by what the number is this early in a possible 10K life.

And if you used synthetic oil, you could probably go until the il change light illuminates.

I've used the high mileage blend.

~~~~~~~~~~~

Guess I'll go with a combination of suggestions, here. I truly appreciate all the posts.
Thank you!
Robb