2024 GM LZ0, 12.1k mi; Dexos D 0W-20 5.2k & 6.9k miles

[Snagglefoot]

Duramax 3.0

Christmas basket.

 

[TailDrag]

With my mileage intervals on the oil, it would put my iron content of the factory fill at 13.3 ppm/1k miles and the second fill at 9.8 ppm/1k miles. So the wear has lessened over time.

 

[AZjeff]

Sorry about that, my question should have been does XM make the ACDelco Dexos D oil.

Yes, they have a Dexos D.

View attachment 254197View attachment 254198

 

[Snagglefoot]

Sorry about that, my question should have been does XM make the ACDelco Dexos D oil.

Got it. At this point I have no evidence who makes it for GM.

 

[BobsArmory]

Sorry about that, my question should have been does XM make the ACDelco Dexos D oil.I think it's either Mobil or Phillips 66

I think it's either Mobil or Phillips 66.

 

[Snagglefoot]

Sorry about that, my question should have been does XM make the ACDelco Dexos D oil.

Check out posting #21. The one quart bottle has a definitive design. Sometimes the manufacturer will use the same design bottle for their own product.

 

[4WD]

Duramax 3.0 View attachment 254356Christmas basket.

Mobil bottles all day long …
Not sure what’s FF though …

 

[Snagglefoot]

Mobil bottles all day long …
Not sure what’s FF though …

I found this. You know the Bitog rule: If its printed nicely it must be true.

 

[Snagglefoot]

Here is more info on the Duramax 3.0 and how there is a wet belt at the BACK of the engine to power the oil pump. It is rated for 150,000 miles. The transmission has to be dropped to change it, but this won't be the job of the first owner in most cases.

https://www.dieselpowerproducts.com...iteration of the,issues with the earlier LM2.

 

[Snagglefoot]

Here's a quick screen shot. It has incredible torque. Enjoy.

 

[cookand]

I believe they have upped that to 200k miles. Maybe just on the newer models. My manual says 150k for my ‘21

 

[panthermike]

I personally would run a 30wt if it were mine. Although admittedly, that's more for warm and fuzzies. I'm sure the 0w20 will give long life as well.

 

[cookand]

I personally would run a 30wt if it were mine. Although admittedly, that's more for warm and fuzzies. I'm sure the 0w20 will give long life as well.

Yeah, I’ve thought about it, but for now I’m just sticking with 20 and 5K OCI with M1 esp

 

[FreedomOne]

Timing chain is more of a concern than the welt belt.

 

[fueldelusion]

I have a 3.0 Duramax, have been using M1 ESP x2 0w-20. Doing roughly 4k mile OCI. I only use 0W-20 to keep the warranty intact. From the iron numbers I see on UOAs and how hot this oil gets in these motors I’d personally want something thicker. The Mobil 1 is a relatively thin XW-20 and there’s always additives sitting at the bottom, not giving me the warm and fuzzies.

I should have a UOA coming soon that I plan on posting. Hoping for a clean report.

 

[CleverUserName]

I personally would run a 30wt if it were mine. Although admittedly, that's more for warm and fuzzies. I'm sure the 0w20 will give long life as well.

I have seen reports of owners needing to replace valvetrain components at under 100k miles. That extra ferrous metal shedding with 0w20 is only coming from 2 sources, the liners and valvetrain.

 

[cookand]

I have a 3.0 Duramax, have been using M1 ESP x2 0w-20. Doing roughly 4k mile OCI. I only use 0W-20 to keep the warranty intact. From the iron numbers I see on UOAs and how hot this oil gets in these motors I’d personally want something thicker. The Mobil 1 is a relatively thin XW-20 and there’s always additives sitting at the bottom, not giving me the warm and fuzzies.

I should have a UOA coming soon that I plan on posting. Hoping for a clean report.

Looking forward to this UOA

 

[Z28racecar]

I just sent off a used oil sample of HPL's PP 0W-20 D to SPEEDiagnostix a couple days ago. Hopefully next week I'll have an analysis of it to see how it compares to the other DexosD oils.

I switched to Amsoil's 5W-30 100% Synthetic Diesel Oil, though. All of the UOAs I've seen of LZ0s using 0W-20 have never been all that great with iron wear.

 

[cookand]

I just sent off a used oil sample of HPL's PP 0W-20 D to SPEEDiagnostix a couple days ago. Hopefully next week I'll have an analysis of it to see how it compares to the other DexosD oils.

I switched to Amsoil's 5W-30 100% Synthetic Diesel Oil, though. All of the UOAs I've seen of LZ0s using 0W-20 have never been all that great with iron wear.

Awesome. Been looking forward to seeing a UOA for this one!!

 

[fueldelusion]

Looking forward to this UOA

Just posted