Recent Topics
Oil weight and Oil Grade
by Snagglefoot - 01/21/20 07:11 PM
Which air filter for RAV 4 Hybrid
by NH73 - 01/21/20 06:44 PM
Finding a good "cold weather" vehicle?
by Vern_in_IL - 01/21/20 06:15 PM
Bough NGK Ruthenium sparkplugs
by cronk - 01/21/20 06:07 PM
HF 30% Off $10 and Under
by TheLawnRanger - 01/21/20 06:02 PM
Stolen Battery-New one on Me
by bunnspecial - 01/21/20 05:29 PM
2006 Acura TSX Buying Advice
by maverickfhs - 01/21/20 04:35 PM
Castrol GTX Diesel 15W-40, CK4
by HDoilDude - 01/21/20 04:30 PM
Combo of P0068 and P307A
by Alfred_B - 01/21/20 04:30 PM
Are the plastic battery trays necessary?
by littlehulkster - 01/21/20 03:18 PM
Amsoil ATV/UTV Powertrain Fluid
by IowaFord - 01/21/20 02:13 PM
Motorcraft FL500s 3,630 miles.
by mpgo4th - 01/21/20 01:36 PM
Xcel Class Action Suit
by John_K - 01/21/20 12:33 PM
RV Freightliner Cummins ISB 6.7 oil question
by 1978elcamino - 01/21/20 11:48 AM
Why I became a pilot and not a doctor...
by jetman - 01/21/20 10:52 AM
Wrong oil or not ?
by M119 - 01/21/20 10:48 AM
30 monograde
by mpack88 - 01/21/20 10:15 AM
Extended life destroys copper?
by mpack88 - 01/21/20 09:49 AM
Project Farm Lucas transmission additive video
by 1978elcamino - 01/21/20 09:43 AM
Newest Members
IowaFord, Origami99, reylafo, PastPresMike, RedBeard83
70497 Registered Users
Who's Online Now
130 registered members (4WD, 67ZL1, 1foxracing, 53' Stude, 379KITTY, 13 invisible), 2,580 guests, and 26 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics300,410
Posts5,175,148
Members70,497
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Origins of GM "Dex" naming convention? #4113134 06/02/16 08:05 AM
Joined: Aug 2008
Posts: 4,039
R
Reddy45 Offline OP
OP Offline
R
Joined: Aug 2008
Posts: 4,039
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 08:10 AM
Joined: Dec 2006
Posts: 9,231
K
KrisZ Offline
Offline
K
Joined: Dec 2006
Posts: 9,231
IDK, somebody named Dexter was involved? Who cares anyways?


2015 Grand Caravan 3.6L - 35k miles.
2006 Mazda 3 2.0L - 186k miles
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113142 06/02/16 08:13 AM
Joined: Sep 2012
Posts: 5,638
D
DBMaster Offline
Offline
D
Joined: Sep 2012
Posts: 5,638
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 08:15 AM.
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113143 06/02/16 08:13 AM
Joined: Jan 2013
Posts: 498
C
CapitalTruck Offline
Offline
C
Joined: Jan 2013
Posts: 498
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 08:46 AM
Joined: Aug 2010
Posts: 7,123
K
Kira Offline
Offline
K
Joined: Aug 2010
Posts: 7,123
AC Delco + Texaco perhaps?

Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113175 06/02/16 08:46 AM
Joined: Jun 2002
Posts: 20,763
MolaKule Offline
Global Moderator
Offline
Global Moderator
Joined: Jun 2002
Posts: 20,763
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 08:48 AM.

Charlie Eppes: "What do you think we should do now?"
Don Eppes: "The same thing when I was in school and I didn't know the answer – fake it." From NUMB3RS
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113182 06/02/16 08:55 AM
Joined: Apr 2013
Posts: 3,504
N
Nate1979 Offline
Offline
N
Joined: Apr 2013
Posts: 3,504
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
2010 Subaru Forester 2.5X
Re: Origins of GM "Dex" naming convention? [Re: Reddy45] #4113196 06/02/16 09:14 AM
Joined: Jul 2015
Posts: 3,772
A
AirgunSavant Offline
Offline
A
Joined: Jul 2015
Posts: 3,772
Maybe easier to INDEX that way smile

Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™