Filter Intervals - Chevy and GMC Duramax Diesel Forum
Maintenance Discuss scheduled maintenace, capacities, filter part numbers, etc.

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post #1 of 59 (permalink) Old 12-03-2019, 05:08 AM Thread Starter
 
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Filter Intervals

Coming up on 40k miles and a couple of questions related to filter intervals on my 2016 LML.

I bought my truck from a dealer that does lifetime oil and filter changes with a dedicated diesel mechanic so oil/filter is every 5k. Usually ends up around 35% on the gauge.

For the fuel filter, I planned to follow the gauge but found some conflicting information. I went ahead and did the fuel filter at 30k because honestly, I cant figure out what you are supposed to do. the manual states 22,500 miles or two years but at 30k miles and almost 3 years the gauge was at over 50%.

For the transmission, I haven't changed the spin on yet. Manual seems to refer to 45k for spin on and then a full service at 90k. I'm not towing a lot and my transmission temps are under 100 degrees most of the time. Does that seem right?

I was going to do transfer case/diffs at 50k (understood those aren't filters )
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post #2 of 59 (permalink) Old 12-03-2019, 05:16 AM
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Filter Intervals

I have a 2016 LML and am coming up on 40k miles myself. I stick with the recommended service interval.

Oil every 7500 miles or 1 year (although I am about to install a bypass)

Fuel filter every 22,500 or 2 years (not willing to risk getting contaminants or moisture into my fuel rail).

I would normally do external trans filter every 45000 miles but I plan on installing a gold plug, so I will also drain all transmission fluid and refill.

Iím doing Diffs and transfer case early to install gold plugs as well.

As for your statement about fuel filter, the percentage only tracks the mileage, so at 2 years, regardless of the percentage, I change mine out... Iím thinking someone either replaced yours before or may have reset the life remaining percentage.


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Last edited by Dive!Dive!; 12-03-2019 at 05:19 AM.
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post #3 of 59 (permalink) Old 12-03-2019, 06:31 AM
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On my LMM, I simply follow the DIC.

As it works out on my truck, the fuel filter needs to be changed every other oil and filter change. Did a complete flush and filter change on the tranny at 50k due to heavy towing with the camper.

So far, so good.

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post #4 of 59 (permalink) Old 12-03-2019, 06:40 AM
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Quote:
but found some conflicting information
Different uses, different % outcomes....can't really judge life based on mileage.

Gallons used would be a better factor for intervals (3k?)
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post #5 of 59 (permalink) Old 12-03-2019, 06:49 AM
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I have a 15 LML and do the following filter services:

Fuel: Every other oil change (approx. 10K-15K miles) Was directed to do so by local shops, and no I do not have them do it or buy my filters from them.
Oil: Once a year or every 6K-7K (Usually for me the once a year comes before the mileage and I also run Full Synthetic)
Trans Spin On: Every other oil change (I mainly tow with it and a $10 filter on amazon is cheap insurance)

Some people may think i am crazy, but if you look around you can find these filters for a total cost of about $60 which IMO is very cheap insurance.
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post #6 of 59 (permalink) Old 12-03-2019, 06:51 AM
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Filters are cheap. For me and my truck:

Oil @ 5,000
Fuel @ 10,000
External Tranny @ 15,000
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post #7 of 59 (permalink) Old 12-03-2019, 08:32 AM
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Most likely

Quote:
....still waiting....if I wasted my money....
Filtration is but one aspect of engine oil life.

As well as ROI $$.
Ask yourself,
"what have I saved by spending 2x$$ for more media area (acDelco comparison), vs spending 1/2 as much $$ on a more porous synthetic media filter (no kit needed) that holds just as much (particulates) and has better absolute filtration specs?"
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2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"
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post #8 of 59 (permalink) Old 12-03-2019, 08:54 AM
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One certain way is to send your oil off for analysis, I have sent oil off to Black Stone Labs for my previous 5.3L Tahoe and was pleased with the results, they advised I could go upwards to 10k on my M1 oil changes... may also consider sending it a sample of the 2500's after and oil change or two...

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post #9 of 59 (permalink) Old 12-03-2019, 10:41 AM
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FWIW, I put a magnet on the side of my oil filter to help trap any iron particles...

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post #10 of 59 (permalink) Old 12-03-2019, 10:45 AM
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Not the stock base filter, but a syn filter designed for extended use syn oils....with 10k+ mile change intervals.

https://www.duramaxforum.com/forum/m...onversion.html

2007 LBZ 3500 LT3 DRW Crew Cab, Sulastics, Putnam XDR 15K, B&W 30K-Turnover GN+Companion, Ride-Rite Air...EFI'd by Rob
2008 LMM 3500WT DRW Crew Cab, 8 'Flat/GN, Workforce Alum Toolbox, Ride-Rite Air

Use-ta Haves 2006-6.0 3500 WT DRW ExCab Flatbed, 2005-LLY 3500 LS DRW Crew Cab, 2002-LB7 3500 LS DRW Crew Cab
I Live my life in such a way that when my feet hit the floor in the morning...Satan shudders & says "Oh shit, he's awake!"
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