What do the tests cost to pass DEXOS certification cost?

Once a manufacturer requires a specific part or oil in order to keep your warranty valid, they must provide it free.

In my case, HPL "meets or exceeds" API spec. Let them prove otherwise.
A “specific” oil requirement would be one manufacturer and one part number like Penzoil Ultra Synthetic 5W-30. GM is fine requiring a specification like DEXOS oils, right? So many oils meet this, nothing specific about it.

I also think a maker saying “meets xmfg standards” isn’t identical to “certified by / licensed by xmfg B3344332 specifications”. You might win a fight, but not without some work.
 
Plus the fact that we’ve never seen an owner’s manual that requires dexos. It’s always recommended, with more of an emphasis on an API license.
 
Plus the fact that we’ve never seen an owner’s manual that requires dexos. It’s always recommended, with more of an emphasis on an API license.
Yes they do “recommend” a DEXOS oil, but with the caveat that use of other oils may void your warranty. Kind of a back door requirement, no?

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Yes they do “recommend” a DEXOS oil, but with the caveat that use of other oils may void your warranty. Kind of a back door requirement, no?

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Not really.

There’s still completely off spec product sold. Especially in Detroit of all places.

So I think it’s smart use of lawyereese and marketing words pushed together. If they “required it” they would have to provide it during the warranty period.

A perfect example of this is Eaton. Eaton requires their transmission fluids. Like PS278. But it just so happens the fluid is good for the length of the warranty…

(I’m a certified Dexos™️ hater.)
 
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Yes they do “recommend” a DEXOS oil, but with the caveat that use of other oils may void your warranty. Kind of a back door requirement, no?
FCA owners manuals or warranty booklets have the same like language and cautions. The key takeaway is "if" they cause damage by using non spec'd fluids, warranty can be denied. Would be reasonable to deny warranty if the use of non spec'd fluids caused the damage.

If they are denying warranty solely based on the use of non spec'd fluid without proving it caused the damage, that is were one has to sue on their dime to enforce the Magnuson Moss Warranty Act. There is right, wrong and what is provable.
 
Does anyone actually have proof of a case where a dealership/OEM either did or did not honor a warranty claim when a "non-recommended" oil was used?

I see a lot of conjecture either way ("it'll be just fine, they'll never test" or "they'll instantly void your engine claims") and wondered if anyone actually has an example.
 
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I'm using 0W-20. Considering I do little towing. the small viscosity difference between -20 and -30, and the quality of HPL, after much research, I chose to stick with 0W-20 and bought five cases. Their -20 is at the upper end of the viscosity range while -30 is at the lower end.

I think if I were to do it over, I'd either run Valvoline Restore and Protect 5W-30 @ 5k OCI intervals, or HPL No-VII 10W-20.
 
Call bunk on this dude

There are more myths about motor oil than myths of small ape like people living under houses.

When people don’t understand something- some folks just make things up
I met this individual and know what he puts out 🧐

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Yes they do “recommend” a DEXOS oil, but with the caveat that use of other oils may void your warranty. Kind of a back door requirement, no?

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Not a requirement at all. The requirement says that if the oil causes damage it “can” be a warranty item.

Having said that, if this is your concern then by all means use a dexos oil. It’s not as if it’s a bad oil.
 
Does anyone actually have proof of a case where a dealership/OEM either did or did not honor a warranty claim when a "non-recommended" oil was used?

I see a lot of conjecture either way ("it'll be just fine, they'll never test" or "they'll instantly void your engine claims") and wondered if anyone actually has an example.
We had a long thread on this a while back. No one was able to do so.
 
I have zero GM experience but worked as a tech for ~30 years at Mopar dealers....I walked away 3 years ago for many reasons...anyway, on failed engines our oil testing consisted of pulling the dipstick to verify if it had any , and maybe asking for some oil change receipts.
So yeah, I call BS on this
 
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