Oil life monitor - Chevy and GMC Duramax Diesel Forum
Maintenance Discuss scheduled maintenace, capacities, filter part numbers, etc.

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post #1 of 12 (permalink) Old 11-11-2012, 09:57 AM Thread Starter
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Oil life monitor

Does anybody base their oil changes from it?
Mine has gone approx. 10K miles.
Is that too long?
Truck has 95K on it.
Used 1 quart in that time.

04 GMC LB7 PPE set on 90hp ported air inlet.
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post #2 of 12 (permalink) Old 11-11-2012, 10:29 AM
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Everything I do is based on miles. I keep a spread sheet and log everything I do to my vehicles.

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post #3 of 12 (permalink) Old 11-11-2012, 10:35 AM
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Yeah I don't go by what the DIC says. If my truck goes 5,000 between oil changes I'm pushing it.




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post #4 of 12 (permalink) Old 11-11-2012, 10:41 AM
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Every 5000 for oil, every 15,000 for fuel filters and run a fuel lubricity additive.

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post #5 of 12 (permalink) Old 11-11-2012, 11:15 AM
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15k on fuel filters? let us know how well your injectors hold up down the road

05' LLY CC/SB 12.41 @109.9 119k
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post #6 of 12 (permalink) Old 11-11-2012, 11:21 AM
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Originally Posted by SickLB7Crenshaw View Post
15k on fuel filters? let us know how well your injectors hold up down the road
I usually go 12K but know alot of people going 15k-20K. How does going longer hurt the injectors? Shouldn't a partially plugged filter better? Obliviously it hurts flow.

2005 LLY CC/SB 4x4/Allison. Air Dog II, EFI live, Built trans, EGR delete.

1994 dodge ram 2500 CTD 100 fuel plate and 3K GSK 4x4 SC flatbed.
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post #7 of 12 (permalink) Old 11-11-2012, 11:59 AM
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Originally Posted by SickLB7Crenshaw View Post
15k on fuel filters?
Not unrealistic. Running the Racor coalescer filters, I regularly see filter lifespan in the 1200 gal range, which my case (heavy towing) equates to 11-13k mile intervals.
At that rate it would be easy to see 20+k mile intervals for some DDs.

But I have seen bad fuel knock it down to 6700 miles. When Racors clog, you know it. Wix (& some others) can bypass and do you harm at those higher intervals.

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post #8 of 12 (permalink) Old 11-11-2012, 04:15 PM Thread Starter
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Has any body had an oil sample done at higher mileage, 10K vs. 5K?
BTW if you change at 5K in your Dmax how often do you change in your gas burner?
I usually go 5K on my gas burners. Usually the oil light comes on at around 3K on my wifes then I change it.

04 GMC LB7 PPE set on 90hp ported air inlet.

Last edited by 77cruiser; 11-11-2012 at 04:18 PM.
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post #9 of 12 (permalink) Old 11-11-2012, 06:19 PM
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Personal preference I dont follow the DIC %.
I track my changes my miles. I keep a little notepad in the truck with what I did, mileage, & date.

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post #10 of 12 (permalink) Old 11-11-2012, 06:45 PM
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I go by DIC. Mine idles a lot, and DIC takes that into account. At least, that's my understanding. I would have to go by hours on mine, not mileage. I've been planning on switching to AMS Oil, though, so I don't have to change mine so often. Willie can be pretty persuasive, LOL. Sounds like a no brainer when he explains that you can change less often and it's cheaper than the Royal Purple I use now, with the K&N oil filter.


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