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Origins of GM "Dex" naming convention? #4113134 06/02/16 09:05 AM
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Reddy45 Online Content OP
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Dex-Cool
Dexron
Dexos

You can see a pattern here. Anyone know why they chose DEX?

Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113139 06/02/16 09:10 AM
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KrisZ Online Content
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IDK, somebody named Dexter was involved? Who cares anyways?


2015 Grand Caravan 3.6L - 31k miles.
2006 Mazda 3 2.0L - 171k miles
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113142 06/02/16 09:13 AM
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DBMaster Offline
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As far as I can tell, Dexron is a brand owned by GM that originated in the early 70's when whale oil transmission fluids were replaced by other materials. So, I guess they just decided the use the "Dex" part to brand other automotive chemicals from that division.

Correction: It is a brand name for a group of technical specifications.

Last edited by DBMaster; 06/02/16 09:15 AM.
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113143 06/02/16 09:13 AM
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A lot of it I believe had to do with the early tie-in with Texaco lubricants and products. Texaco used Dex prefixes with their products and GM used them for their OEM products. Dexron, Dex-Cool, etc. were all Texaco products.


2013 Silverado 4.8L VVT 4x4 97k mi - ACDelco Dexos Full Synthetic 5w30 (ExxonMobil variant), ACDelco PF48E
Re: Origins of GM "Dex" naming convention? [Re: CapitalTruck] #4113174 06/02/16 09:46 AM
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Kira Offline
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AC Delco + Texaco perhaps?

Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113175 06/02/16 09:46 AM
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Here is a possible derivation, somewhat tongue-in-cheek?

Quote:
Potential Origin of Dexron name:

Dex is a contraction for decimal exponent or 10^x, implying orders of magnitude,

ron is a currency of Romania based on the decimal system. ron literally means “lion.”

With this information, Dexron may potentially mean, “A Bigger or Better Lion?”

Last edited by MolaKule; 06/02/16 09:48 AM.

The value of a scientific theory is its ability to prompt further study, not that it has any relation to the established facts of scientific reality.
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113182 06/02/16 09:55 AM
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Nate1979 Offline
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According to Wiki GM introduced the Dexron ATF in 1968.

Here is a history of the trademark. It was filed originally by GM in 1967.
https://trademarks.justia.com/722/67/dexron-72267296.html

Dex-cool originally filed in 1997:
https://trademarks.justia.com/746/29/dex-cool-74629932.html


2015 GMC Sierra 2500 6.0L
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Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113196 06/02/16 10:14 AM
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AirgunSavant Offline
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Maybe easier to INDEX that way smile

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