2025 Tahoe 6.2-liter first oil change interval

[jfoj]

OE filters typical catch debris around 30 microns.

On newer engines the piston ring design is such they break in during cold testing.

I assume why GM did not detect problems with cold testing/Spintron is differences in bearing clearances were/are probably masked by the variable displacement oil pump that keeps the pressure pretty constant based on a spring and oil pressure feedback design. So differences in oil pressure would not easily be flagged as a problem.

I found documents that indicated for some reason GM moved the 6.2l and maybe other crankshaft manufacturing to Mexico at some point, my guess is this may have changed recently.

In addition to cold testing/Spintron testing of the engines after assembly the complete vehicle goes to a treadmill test at the end of assembly for about a 2-3 mile running test, this is the first time the engine actually gets warm.

Back to the question about when to change the oil. I would personally change the oil and filter at 500 miles, then 2000 miles, then 2500 miles. I would then change the oil around the 50% OLM on the dash or at around 4000 miles. Can you go longer, sure, is oil cheaper than steel, yes.

Over 120k miles if you change the oil and filter 2x more frequent than the OLM suggests, you probably spend between $1200-$1500 depending on oil and if you DIY. You CANNOT perform a SINGLE internal engine repair for this amount of money.

I would run 0W40 and no 0W20 oil.

 

[j91z28d1]

oil filter media has different size holes all thru it. when the filter box says say 30 microns, itl eaves out the efficiency spec. meaning how well it stops particles at that size.

it's never 100% but some are better then others.

change your oil is much better than hoping your filter catches stuff.

 

[viven44]

I'll probably be schooled for this... but I've just not bought into the debris theory a whole lot ever, after all there is an oil filter but break-in debris related damage makes a lot more sense if you are talking about break-in on small engines without filters (air compressors, and the like)... there can certainly be particulates that are smaller than the filter size mesh so it is probably a good thing to replace sooner than needed....we did ours at around 4000 miles on the 5.3....

I'm going to school myself here a bit...

Not all the oil makes it through the filter all the time... duh .... I don't know if/when the oil filter will bypass on these engines, but that's certainly a possibility if the break-in clogs up the filter a bit more than normal use

I ran across this bulletin, which interestingly doesn't include L84/L87 (maybe an oversight or is there a reason?)

https://static.nhtsa.gov/odi/tsbs/2023/MC-10242844-0001.pdf

 

[jfoj]

On the oil filter issue, also note that the PF63/PF64 have much larger and higher quantity of oil inlet holes in the filter when compared to some typical aftermarket filters. This does not even touch on the oil pressure relief valve spring pressure or oil filter media.

There is a reason the oil filter base has so many larger holes than what you typically see on some of the aftermarket filters. Not sure of the exact reason, but AC Delco would not do this without a specific reason.

PF63 oil filter base plate

Other After Market Oil Filter Base Plate Designs

 

[DuraYuk]

On the oil filter issue, also note that the PF63/PF64 have much larger and higher quantity of oil inlet holes in the filter when compared to some typical aftermarket filters. This does not even touch on the oil pressure relief valve spring pressure or oil filter media.

There is a reason the oil filter base has so many larger holes than what you typically see on some of the aftermarket filters. Not sure of the exact reason, but AC Delco would not do this without a specific reason.

PF63 oil filter base plate

View attachment 457595

Other After Market Oil Filter Base Plate Designs

View attachment 457592View attachment 457593View attachment 457594

Why not use the upf63 if you are worried about the filter ? The pf series is oe recommended but it falls flat when compared to the upf series which is also oe recommended.

 

[jfoj]

I believe the UPF63 may be a Napa or Wix??

But if this Amazon link is accurate on the picture of the base plate, very different animal.

Also with how often I change the oil, the UPF63 is about $10 more than the PF63 as well.

UPF63 Oil Filter

 

[DuraYuk]

I believe the UPF63 may be a Napa or Wix??

But if this Amazon link is accurate on the picture of the base plate, very different animal.

Also with how often I change the oil, the UPF63 is about $10 more than the PF63 as well.

UPF63 Oil Filter

I guess what I'm saying is that the OEM upgraded filter doesnt have the feature you speak of....and is the one that's rated for heavy duty applications.

And its made by AC Delco so i guess ac Delco did make it that way for a specific reason.

I use the upf on my diesel. Its night and day when you have both in your hands. There are YouTube videos of cut open versions of each.

 

[Stbentoak]

I guess what I'm saying is that the OEM upgraded filter doesnt have the feature you speak of....and is the one that's rated for heavy duty applications.

And its made by AC Delco so i guess ac Delco did make it that way for a specific reason.

I use the upf on my diesel. Its night and day when you have both in your hands. There are YouTube videos of cut open versions of each.

Same here all I have used on mine since new. About six oil changes. A much hefty earned solid filter, you aren't gonna punch a hole in this one too easily....

 

[GMCnewbee]

At my last two oil changes the GMC Dealer installed oil filter SL-N-Filter (01836-BOPCKT) whatever the heck that is. Importantly, it was only charged at $6.99 on the Service Ticket. The oil was listed as N-OIL (08800-BOPCK) at $6.99 a quart. Now I am wondering if I should be buying the NAPA UPF63 and 0-40 Mobil 1 myself. Those Dealer prices seem awfully ??? reasonable ????

 

[Marky Dissod]

If you do a used oil analysis early enough, they MIGHT be able to tell you the motor oil that was used.