dexos Test Registration Manual

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Came across this manual from the GM Test Data Center (GMTDC) which shows the dexos license registration process. Haven't seen anyone post this level of detail, so thought it would give some more info on what's involved. Some claim there isn't much testing required ... this manual (Sep 13, 2024 version) clearly shows otherwise ----> PDF File

Tables from the manual summarizing all the tests required to meet dexos.

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Specifically says engine tests (talking live fired test engines per the manual), along with other test data.

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Came across this manual from the GM Test Data Center (GMTDC) which shows the dexos license registration process. Haven't seen anyone post this level of detail, so thought it would give some more info on what's involved. Some claim there isn't much testing required ... this manual (Sep 13, 2024 version) clearly shows otherwise ----> PDF File

Tables from the manual summarizing all the tests required to meet dexos.

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Thank you for this.

Appears there is some truth to revealing the “recipe”.
 
So it is all about money and revealing ones formulation.
The registration manual references "formulation coding" ... so who knows how far that dives into the exact chemistry. As shown in the other thread, the registration cost isn't really much. The big cost would be any testing required to be done by the submitter that are specific up and beyond API/ILSAC, etc to meet dexos.

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The registration manual references "formulation coding" ... so who knows how far that dives into the exact chemistry. As shown in the other thread, the registration cost isn't really much. The big cost would be any testing required to be done by the submitter that are specific up and beyond API/ILSAC, etc to meet dexos.

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I had heard it cost hundreds of thousands of dollars to get a dexos cert. Now we know why. That's for posting that.
 
I had heard it cost hundreds of thousands of dollars to get a dexos cert. Now we know why. That's for posting that.
I wouldn't believe that without solid proof. It would depend on how many extra tests would have to be done up and beyond what API/ILSAC etc cost them to do in order to get those basic certifications/licenses. If the actual cost of the dexos license is only $1,250 (says "per company", not per oil formulation) plus $0.002 per gallon sold for volumes over 1 million gallons per year, then that cost is pretty small. Extra testing costs (above API/ILSAC, etc) to meet all the dexos test specs would be where the big cost would be. The royalty for volume sold would only be $2,000 for a million gallons. That's $0.0005 per quart.

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The costs for the API cert/license seems higher than the dexos license fee.

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Thanks.

This is not just a spec, but a license/certification (if those two are the same), correct? You submit an oil sample, and it goes to GM or the Dexos people to see if it meets the requirements, correct?

So the "submitter" does the testing? or do they simply pay a fee for the Dexos folks to test the oil?
 
Thanks.

This is not just a spec, but a license/certification (if those two are the same), correct?
Yes, look at all the test specs it needs to meet in order to be dexos certified/licensed. GM will not give the dexos license if all the data is submitted and the oil can't meet the required dexos test specs.
 
So the "submitter" does the testing? or do they simply pay a fee for the Dexos folks to test the oil?
It looks like the submitter must get all the testing done. Yes, if extra testing needs to be done to obtain the required test data then that would obviously cost more money for the submitter. GM doesn't do the testing, the submitter has to do it or hire to get it done by a lab that is certified and recognized by GM ... talks about that in the linked PDF manual - "Section IV, Test Lab Requirements".
 
Thanks.

This is not just a spec, but a license/certification (if those two are the same), correct? You submit an oil sample, and it goes to GM or the Dexos people to see if it meets the requirements, correct?

So the "submitter" does the testing? or do they simply pay a fee for the Dexos folks to test the oil?
The applicants pay for all that testing.
It's like thousands of dollars for just iso testing an oil filter or air filter.
Some of these oil tests require running the oil for so many hours in a test engine, taking it apart and looking at engine stuff under microscopes.
I bet some of these tests cost tens of thousands of dollars.
 
I wouldn't believe that without solid proof. It would depend on how many extra tests would have to be done up and beyond what API/ILSAC etc cost them to do in order to get those basic certifications/licenses. If the actual cost of the dexos license is only $1,250 (says "per company", not per oil formulation) plus $0.002 per gallon sold for volumes over 1 million gallons per year, then that cost is pretty small. Extra testing costs (above API/ILSAC, etc) to meet all the dexos test specs would be where the big cost would be. The royalty for volume sold would only be $2,000 for a million gallons. That's $0.0005 per quart.

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The costs for the API cert/license seems higher than the dexos license fee.

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Currently, for one blender I work with, the Dexos fee is “around” 25 cents a gallon. Plus the additional testing and such, which is covered by purchasing the approved additives.

That’s a very substantial amount.
 
Currently, for one blender I work with, the Dexos fee is “around” 25 cents a gallon. Plus the additional testing and such, which is covered by purchasing the approved additives.

That’s a very substantial amount.
If that's the case, then it's probably because of the cost of products used to create the blend to meet the dexos spec. Not all oil formulations are going to be able to meet the spec. The actual license fee is not expensive in the whole scheme. If it wasn't blended to meet dexos, then less expensive blending products would be used and it wouldn't meet the required specs or testing performance ... meaning a worse performing oil. I'll pay 6.25 cents more per quart for an oil that can pass more stringent tests.
 
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Came across this manual from the GM Test Data Center (GMTDC) which shows the dexos license registration process. Haven't seen anyone post this level of detail, so thought it would give some more info on what's involved. Some claim there isn't much testing required ... this manual (Sep 13, 2024 version) clearly shows otherwise ----> PDF File

Tables from the manual summarizing all the tests required to meet dexos.

View attachment 246405

View attachment 246406

Specifically says engine tests (talking live fired test engines per the manual), along with other test data.

View attachment 246409
outstanding
 
So it appears it is not just a big old money grab as some folks claimed. Interesting.
You think an oil that's just API or ILSAC certified could meet all the requirements listed in the Test Registration Manual? You think all of those requred tests in Table II are done for API or ILSAC? I doubt it because some of those tests are GM specific.
 
If that's the case, then it's probably because of the cost of products used to create the blend to meet the dexos spec. Not all oil formulations are going to be able to meet the spec. The actual license fee is not expensive in the whole scheme. If it wasn't blended to meet dexos, then less expensive blending products would be used and it wouldn't meet the required specs or testing performance ... meaning a worse performing oil.


All GF7 additives that are currently out there, should, meet D1G3 with the right base oil blends.
 
The applicants pay for all that testing.
It's like thousands of dollars for just iso testing an oil filter or air filter.
Some of these oil tests require running the oil for so many hours in a test engine, taking it apart and looking at engine stuff under microscopes.
I bet some of these tests cost tens of thousands of dollars.
A number of proof of performance tests have been done in taxi service …
 
"GM dexos® 1 Gen 3 Base Oil Interchange (BOI) and Viscosity Grade Read Across (VGRA) Rules" - June 2023

Link to PDF on the GMTDC website -----> LINK
 
I think one thing that is lost here, is the actual manufacturing process involved in all this. And that’s where the question(s) come into play.


What blenders solubilize their own additives, which ones don’t?

That’s really, the heart of this thread and the last thread over a vaguely similar conversation. I thought about this since that thread got locked.

I don’t think there is a good understanding on how an oil is put together. And that’s the problem.

You can buy pre-packaged solutions from additive companies, or even from other blenders. That are already solubilzied and all you need to do is slap it in the correct base oil blend, submit it, pay the fees and it’s whatever approvals you’re going for.

If you solubilize your own additives, then you can set your own destiny so to speak. Because you can build your DI package how you want it. You can build it with cheaper polymers, or more expensive polymers. You can build it with different components that will change the flavor so to speak. Then you can put it with different base oils.

It’s sort of like legos. Different bricks will lead to different shapes. You can either follow the instructions and make the picture on the box. Or you can build your own way.

So will today’s GF7 additives meet or exceed D1G3 specs? Absolutely. You can take Lubrizol PV1710, probably solubilize it in a PAO, throw it in 3043. And have a GF7 & D1G3 ready 5w30. (That combo is strictly hypothetical, for the record.)

The additive companies will tell you whether their additives will pass/fail all the D1G3 tests before you buy it and what the blend is. So it’s not a question of “will the additives pass” that GM is asking for. Lubrizol, Afton, Infineum, etc. already do all that work for you.

What GM is asking when they ask you to submit a sample, is that you’re not going outside of their box. Then you’re registered to pay your fees once you start producing and selling.

If you’re building your own ad pack, then it gets a little more complicated. But that’s, where the Amsoil’s, HPL’s, Redlines, etc. etc. etc. of the world. They already know the answer, but they don’t fix the box. And it’s not worth the money, to try to get into the box.

You just don’t throw additives and oil in a kettle and hope for the best. This is science. You know what you’re making before you make it. The additive companies that spend hundreds of millions on R&D, are the ones doing the guess work.

There’s also not a ton of choices for additives out there. Because now we are going to the business side of things. Inventory is expensive and hard. There’s not a million different components out there. You have some options, but not a lot. And you’re vastly more limited if you don’t solubilize your own additives.

It’s easier to understand when you’ve seen these plants. And what they’re producing and how they’re producing it. Then add in the business side of things, controlling inventory, parts of the plant, what base oils you stock, making base oil deals. You can’t afford to have 20 different base oils in large quantities. Because you can’t make deals in smaller quantities.
 
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