2025 denali ultimate oil question

Not everyone is into Amsoil. The point I was trying to make is the relative cost. As far as I know Super car is almost $60 a case of 6 quarts. In comparison Signature is $45 a gallon. That small difference made my go Signature for my L84. However nothing wrong with Super car.
Ummm… 4 quarts at $45 means 6 quarts costs $67.50… but you probably bought 3 jugs to get 12 quarts, so that’s $135.

Either oil is really good, but I’m pretty sure your math is suspect. 👍🏻
 
I think if you post on a public forum photos of your cars then questions aren't unexpected. I'm sure OP is a big boy and can ignore questions if he doesn't want to answer them. He doesn't need you to save him, and your virtue signaling adds nothing to the discussion. And how do you even know what was implied? You know what happens when you assume.
Get real.

He said, “just wondering why your wife “needs” a “tank like that”.

Don’t pretend. That’s an obvious dig at their choice of vehicle and you know it.

I have no issues with questions or discussion of any kind. Anyone’s free to comment or reply.
 
Just wondering why your wife needs a tank like that or do you guys have a few kids to transport around ?
We have two girls. Both play little league softball, both play travel softball. Both do gymnastics, and both are on the elite travel teams. We also go on a few trips a year for a week and she always complains about not having enough room in her tahoe that we bought new in 2015. But we saved pretty heavily the last few years. The new one doesn't have any payments. Knowing that it's just how my wife is, she gets a new one every ten years like clockwork and the old ones get passed down to me, I'd like it to last. I have read that supposedly gm fixed the crank and rod issue in March of 24, I just always had a terrible feeling about 0w20 oils.
 
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Does the engine have a 0W-40 Oil Cap?

What is a "covid engine"
Did the robots get drowsey?

Actually, GM still uses a pretty good mix of workers and robots/machines in their Flint plant
Covid engine/vehicle to me is texas slang for vehicles built during covid where there was poor quality control of the machining and build processes due to a wide array of issues all businesses faced during the shutdowns. Nobody wanted to work when they could get paid to stay at home.
 
Just noticed your quote - where ya getting good BBQ?
Before having kids the wife and i used to do competition bbq. We would buy fixer up motorhomes, use them for a few years and sell them for a profit. Then upgrade to a better one. Better meaning we know what we do/don't want in the next one based off experience. But to answer your question, I just cook it. We really don't like eating out because it's expensive and always a let down. Our bbq team DR SMOKE has 37 grand championships, lots of first place state championship wins including ribeye in the SCA. Two big Bertha wins in Lockhart for first place brisket, two wins at the Houston rodeo with first place chicken calls.

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I wouldn’t use a diesel oil in a gas engine. There’s plenty of good 40wt gas engine oils to go with. Mobile has the dexos R stuff that GM recommends now for the 6.2 but it’s about $16 a quart. There’s plenty of euro oils that cost less and should work just fine.


I watched the video. It was a good video but he didnt prove anything. He just said that they had a machine that could test down to 1/1,000,000th of an inch. If an engine has wear if 100% or more from diesel oil, because it had one more millionth of wear then how would that ever matter? My uncle gets delo conventional 15-40 by the pallet and runs that oil in every machine he owns, gas and diesel. He has a layover rig company and those machines are used extremely hard and the gas trucks idle sometimes all day.
 
I watched the video. It was a good video but he didnt prove anything. He just said that they had a machine that could test down to 1/1,000,000th of an inch. If an engine has wear if 100% or more from diesel oil, because it had one more millionth of wear then how would that ever matter? My uncle gets delo conventional 15-40 by the pallet and runs that oil in every machine he owns, gas and diesel. He has a layover rig company and those machines are used extremely hard and the gas trucks idle sometimes all day.

The test from that machine literally is the proof. Not sure how that was missed. 🤷🏻‍♂️ Wear went up 3x using a diesel oil.
 
The 2025 should have the crank diameters and connecting rod diameter issues resolved, GM has gone on record saying they are fixed. As a former lead manufacturing enginer for the L87 conversion (From L86) block manufacturing engineer, I can confirm this is true. (I work for GM). The L87 recall issue is very basic as I understand it, and very very unfortunate. (Read: avoidable) from a supplier issue.

In order of Oils for 0w40 Dexos R:
ESP X4 0w40
Supercar
FS

In that order. If prices matters, I would just run FS.



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The 2025 should have the crank diameters and connecting rod diameter issues resolved, GM has gone on record saying they are fixed.
What exactly were these issues? Got any documents you can share?

The L87 recall issue is very basic as I understand it, and very very unfortunate. (Read: avoidable) from a supplier issue.
What exactly was avoidable?
 
The 2025 should have the crank diameters and connecting rod diameter issues resolved, GM has gone on record saying they are fixed. As a former lead manufacturing enginer for the L87 conversion (From L86) block manufacturing engineer, I can confirm this is true. (I work for GM). The L87 recall issue is very basic as I understand it, and very very unfortunate. (Read: avoidable) from a supplier issue.

In order of Oils for 0w40 Dexos R:
ESP X4 0w40
Supercar
FS

In that order. If prices matters, I would just run FS.



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So if one would need a new engine and receives a fresh new off the line would one run the OEM spec 0W20 or would still be recommended to run 0W40. If that is true why would you not be required to run 0W40 in a 2025.
 
The test from that machine literally is the proof. Not sure how that was missed. 🤷🏻‍♂️ Wear went up 3x using a diesel oil.
When something doesn't confirm their pre-existing biases, they will find a way to criticize it, even when the gold standard test is staring them in the face.
 
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