2024 GMC Yukon Denali XL 2WD 6.2L - 2k and 4k Original Mi W/Two UOL, OEM Oil

[AEHaas]

I opened the Wix filter from the second 2,000mi run (4,000mi total on the original OEM oil). Remember I removed the OEM filter at the end of the first 2,000mi original interval. This was thrown out.

To my surprise the Wix filter had Very little visible debris. Yes, I soaked off the oil in mineral spirits. Almost as little as a fully broken in motor. I hope this is indicative of a well built engine.

Ali

 

[TiGeo]

I would change the oil simply due to Si.

It's just the sealers.

 

[TiGeo]

Change the oil for sure. That seems to be a good factor in long engine life at least changing the oil early in an engine's new life.

Data to substantiate that?

 

[benjamming]

Data to substantiate that?

SAE paper that has been posted here quite a few years ago.

 

[fantastic]

It's just the sealers.

Well, From most of what is known, around here, I would say that most of the high reading is as you stated the sealers but being a new engine & the assembly process, what other harmful Si particles are in there? Are they also high too? Unless there's a machine that can read sealers from dirt we'll not know and that probably isn't going to happen on a cheap UOA. That's why It's a good idea to change the oil when it's that high. So, from my perspective "Better safe" & change it.

 

[PontiacHO]

New truck. I sampled the oil at 2,000 original miles and changed the GM air and oil filters to Wix XP then drove another 2,000 miles. I resampled the oil for a second UOA. No oil change as yet. No added oil. It is about half a quart low on the oil stick. It looks fairly clean. Do I continue or change the oil?

Ali

View attachment 259231

See if it will make it to 25k with just make up oil. (Sarcasm) That’s a very nice vehicle to be “experimenting “ with oil and intervals. Maybe it’s a feeling of authority to challenge the integrity of your vehicle’s engineering.

 

[cheesepuffs2]

Data to substantiate that?

I don't have a peer-reviewed study to give you, but just from being around engines, why would it not be a plus to flush out manufacturing debris and small metal shavings from initial break-in?

 

[Patman]

I don't have a peer-reviewed study to give you, but just from being around engines, why would it not be a plus to flush out manufacturing debris and small metal shavings from initial break-in?

That’s my thoughts too. I normally don’t like to do short intervals but I will always stick to a short one for the first interval (or two) on a new car. I changed the oil in my Vette at 1100 miles and again at 3100 miles. For my third interval I did it at 25% oil life (5600 mile OCI) and after that I started following the OLM (which generally means a 7 to 7.5k interval)

 

[cheesepuffs2]

That’s my thoughts too. I normally don’t like to do short intervals but I will always stick to a short one for the first interval (or two) on a new car. I changed the oil in my Vette at 1100 miles and again at 3100 miles. For my third interval I did it at 25% oil life (5600 mile OCI) and after that I started following the OLM (which generally means a 7 to 7.5k interval)

There's times where things are just common sense.

 

[TiGeo]

I don't have a peer-reviewed study to give you, but just from being around engines, why would it not be a plus to flush out manufacturing debris and small metal shavings from initial break-in?

B/c that's why you have an oil filter. How is that so many folks that just do a normal OCI on that first one don't have issues? B/c it doesn't matter is why. I've never done this and have no issues that could ever be pegged on an early OCI. If it makes you feel better, do it. What is the precise OCI to do this? All of that metal bits folks are worried about are there from day 1 so going to 1K miles? Why not 10 miles?

 

[cheesepuffs2]

B/c that's why you have an oil filter. How is that so many folks that just do a normal OCI on that first one don't have issues? B/c it doesn't matter is why. I've never done this and have no issues that could ever be pegged on an early OCI. If it makes you feel better, do it. What is the precise OCI to do this? All of that metal bits folks are worried about are there from day 1 so going to 1K miles? Why not 10 miles?

Well if we find our way over to BITOG's very own oil filter forum, we can find a not so uncommon occurrence of oil filter media found with holes torn through it after being taken out of service. Worst case scenario, we know that debris from the factory is real, and we know that engine break-in causes engine internals to shed material, so what if you run a 10,000 mile OCI from brand new, unbeknownst to you the filter media tears, and now that debris is cycling through the engine for however long? Why take even a small risk of that with a brand new engine?

 

[TiGeo]

Well if we find our way over to BITOG's very own oil filter forum, we can find a not so uncommon occurrence of oil filter media found with holes torn through it after being taken out of service. Worst case scenario, we know that debris from the factory is real, and we know that engine break-in causes engine internals to shed material, so what if you run a 10,000 mile OCI from brand new, unbeknownst to you the filter media tears, and now that debris is cycling through the engine for however long? Why take even a small risk of that with a brand new engine?

B/c I don't see it as a risk.

 

[cheesepuffs2]

B/c I don't see it as a risk.

You don't believe that manufacturing foreign object debris, excess gasket maker, or break-in metals are real?

 

[TiGeo]

You don't believe that manufacturing foreign object debris, excess gasket maker, or break-in metals are real?

Sure but I don't believe they pose the risk folks here believe...they are managed by the oil filter. If this was a significant risk the OEM would tell you to do an early change. I've had new vehicles for 25 years and never did an early change and never had an issue with any of them.

 

[cheesepuffs2]

If this was a significant risk the OEM would tell you to do an early change.

Many vehicles did... Marketing tactics to push literature of "low maintenance" have overpowered the sensibilities of the early oil change after break-in, but in the powersports world where customers have a higher tolerance for more frequent service intervals, a first service oil change at ~500 miles is still the norm.

These decisions by automakers are not purely the choice of engineering departments. The marketing department has an agenda, and often times within a corporate culture, will win out if they can prove customer preference their way and project higher sales.

 

[Glenda W.]

Many vehicles did... Marketing tactics to push literature of "low maintenance" have overpowered the sensibilities of the early oil change after break-in, but in the powersports world where customers have a higher tolerance for more frequent service intervals, a first service oil change at ~500 miles is still the norm.

These decisions by automakers are not purely the choice of engineering departments. The marketing department had an agenda, and often times within a corporate culture, will win out if they can prove customer preference their way and project higher sales.

Agree 100%. The old manuals written by engineers are long gone. Now we’re stuck with lifetime fluids, no break in procedure, no viscosity charts, no severe service recommendations, no warm up recommendations, long intervals, and low viscosity oil. All for the sake of fuel mileage and low maintenance costs. I’m no genius but have a hell of a lot of common sense. I can read between the lines.

 

[Patman]

Sure but I don't believe they pose the risk folks here believe...they are managed by the oil filter. If this was a significant risk the OEM would tell you to do an early change. I've had new vehicles for 25 years and never did an early change and never had an issue with any of them.

Some do call for an early change actually. BMW calls for a 1200 mile change with the M2, M3, M4 and M5. And the dry sump C7 Corvettes called for a 500 mile oil change.