High Mileage Reports - With Stock Cp4 - Page 10 - Chevy and GMC Duramax Diesel Forum
11-16 LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #91 of 133 (permalink) Old 11-09-2019, 09:32 AM
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This post is reassuring being that I’m just about to roll over 10k on my truck this week.

2016 GMC 2500HD Denali 6.6l LML

DOP (used) 10/16/19 @ 8,641miles.
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post #92 of 133 (permalink) Old 11-09-2019, 05:40 PM
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If you have a truck with only 10K on it you probably don't have a CP4. The newer trucks have an HP4 which is more closely related to the CP3 than the CP4 in design. Was that a typo for 100K or did you find a really low mileage truck?
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post #93 of 133 (permalink) Old 11-09-2019, 08:25 PM
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No typo. I found a 2016 GMC 2500 Denali with 8,641 miles when I bought it about a month ago. Found that old guy that hardly drove it and drove it like a baby. Most he hauled was a 7,500lb air stream trailer.
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2016 GMC 2500HD Denali 6.6l LML

DOP (used) 10/16/19 @ 8,641miles.
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post #94 of 133 (permalink) Old 11-10-2019, 02:54 PM
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Originally Posted by 6686L View Post
let's see - assuming you bought your '09 in 2009, and this is now 2019. Given my limited math skills, that's ten years during which you drove 800,000 miles.

Wow - you average 80,000 miles per year? That's almost 7,000 mi. per month. What are you telling us - you do OTR with a Durmax ?

Assuming what you have posted is correct, can you tell us your secret to keeping your vehicles serviceable ? Oil change intervals. Oil & oil filter brand? How often do you change automatic transmission and gear oil?
I work in the telecom sector, cover all of Oklahoma and into Ks, Ar, & Mo.

If I leave the house, it's usually a 250mi round trip. 400mi day's aren't uncommon.

The only thing I did to the '09 was brakes and front spindle sets at 300K mi. Oil changes within a coupla thousand miles of when it told me to.

The '11 had been tuned and deleted. Ran it with the 100hp bump.

It got a tranny controller, 2 water pumps, brakes & front spindle sets at 365K mi. Had to add some differential juice about then. Changed the Allison spin on filter at 200K, or thereabouts.

I had run Lucas fuel treatment, then caught a whim to use the Power Service. I think the cleaning action of the PS may have caused some issues.

I run Rotella and Fram XG9100 filters.

The '16 High Country had 42k when I bought it a little over a year ago. It has had head gaskets (warranty) and the DEF system is dealing me misery. Just rolled 115Kmi.

On my third DMax.
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post #95 of 133 (permalink) Old 11-10-2019, 03:28 PM
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I think you pushed it a little to far on the Allison spin-on.
Mine is recommended every 10k and I think the LML is around every 20 k.
What’s your fuel injectors balance rates running ?

I like and use both LUCAS & Diesel Kleen mixed been using this mix in my diesels since 2003.
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2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe, DHD PCV Re-Route, AirDog 4G100
Castrol Hypuron/Vecton 15W40 synthetic blend oil
Donaldson 550832 2 qt oil filter

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning
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post #96 of 133 (permalink) Old 11-10-2019, 04:19 PM
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What’s your fuel injectors balance rates running ?
I don't have the slightest clue, no dash thingee to see it.

Seriously, I put diesel in, change the oil and go down the road.

It's just a rolling toolbox/office in my world. At 5-6 years, it's worn out and time for a newer one.

I'm concerned about the difficulty of changing things in the L5P. Hopefully it will be easier & cheaper when I have to get one.

On my third DMax.
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post #97 of 133 (permalink) Old 11-10-2019, 04:45 PM
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To be honest owning a diesel requires a little more responsibility to know what’s going on compared to just owning a Prius.
Edge Insight “monitor only” would be a good investment that you can even take with you to put in another truck, this way you’d have ideas on what’s happening or what’s not happening.
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2007.5 GMC Sierra 3500 SRW L.B."BLACK" C.C. 4X4 LMM Z71
DIY stock airbox mod, aFe ProGuard 7, OEM drop-in
EFILive ECM ATP - Heavy Tow Tune with Turbo Brake.
EFILive TCM Duramax Tuner
DHD Cold Side High Flow Intake Pipe, DHD PCV Re-Route, AirDog 4G100
Castrol Hypuron/Vecton 15W40 synthetic blend oil
Donaldson 550832 2 qt oil filter

2007 Yukon Denail "BLACK" 6.2 gasser
DIY stock AirBox Mod, K&N, Airaid intake, EFILive TCM only tuning
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post #98 of 133 (permalink) Old 11-10-2019, 04:59 PM
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Originally Posted by D_R_C View Post
To be honest owning a diesel requires a little more responsibility to know what’s going on compared to just owning a Prius.
Edge Insight “monitor only” would be a good investment that you can even take with you to put in another truck, this way you’d have ideas on what’s happening or what’s not happening.
I started off working in an automotive machine shop in high school (late 70s), grinding cranks, doing heads, etc.. Was an Army, tracked vehicle mechanic. Right now I work a fleet of several hundred diesel generators.

This is one side of my shop...





Don't like wrenching, but I reckon I can get by.

Gotta pay for beer, hunting and offshore fishing somehow.
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On my third DMax.
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post #99 of 133 (permalink) Old 11-10-2019, 08:23 PM
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There is nothing in that shop I would want, at least after I had a couple of hours to pick it clean. I have taken a lifetime to gather the tools I really want and now that I have a pretty good assortment, I don't have the energy to do much with them. Life is funny that way. At least my kids get some good use out of them.
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post #100 of 133 (permalink) Old 11-11-2019, 07:19 AM
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Quote:
Originally Posted by 578VTR View Post
I started off working in an automotive machine shop in high school (late 70s), grinding cranks, doing heads, etc.. Was an Army, tracked vehicle mechanic. Right now I work a fleet of several hundred diesel generators.



This is one side of my shop...











Don't like wrenching, but I reckon I can get by.



Gotta pay for beer, hunting and offshore fishing somehow.
I would say with your milages sir, that you have it figured out I wouldn't worry about a dam gauge either or change a single piece of your normal routine

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