Approved Dex-Cool providers

[JimD]

And the Prestone product that is labeled as Dex-Cool made the list.

I have a pdf file of the GM Service Bulletin that lists all the approved providers but it is slightly too large to load here.

Bruce??

[Bruce Nunnally]

email it to me, or put it up on a file server and link to it?

[Bill A]

Email it to me too if you can at

baincf@aol.com

Thanks

Bill

[JimD]

The following is the much-edited (by JimD) meat of the first page of the bulletin.

The text below is verbatim and not taken out of context:

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Bulletin number: 00-06-02-006C

Date: May 2006

Subject: DEX-COOL (Trade Mark) Engine Coolant Information

Models: 2007 and Prior GM Passenger Cars and Trucks (Including Saturn)

2007 and Prior HUMMER Vehicles

2005-2007 Saab 9-7X

Following in Table 1 are the only current licensed

and approved providers of DEX-COOL. Products

that are advertised as "COMPATIBLE" or

"RECOMMENDED" for use with DEX-COOL have

not been tested or approved by General Motors.

Non-approved coolants may degrade the coolant

system integrity and will no longer be considered a

5 yr./150,000 mile coolant.

Table 1 - Approved and Licensed

Providers of DEX-COOL Products Meeting

General Motors GM6277M Specifications

_______________________________________

Chevron

Prestone

Shell

Valvoline

GM Vehicle Care

AC Delco

And selected (by JimD) items from page 3 of the Bulletin:

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Sealing Tablets

Cooling Systen Sealing Tablets (Seal Tabs) should

not be used as a regular maintenance item after

servicing an engine cooling system. Discoloration of

coolant can occur if too many seal tabs have been

inserted into the cooling system. This can occur if seal

tabs are repeatedly used over the service life of a

vehicle. Where appropriate, seal tabs may be used if

diagnostics fail to repair a small leak in the cooling

system. When a condition appears in which seal tabs

may be recommended, a specific bulletin will be

released describing their proper usage.

Water Quality

The integrity of the coolant is dependent upon the

quality of DEX-COOL and water. DEX-COOL is a

product that has enhanced protection capability as

well as an extended service interval. These enhanced

properties may be jeopardized by combining

DEX-COOL with poor quality water. If you suspect

the water in your area of being poor quality, it is

recommended you use distilled or de-ionized water

with DEX-COOL.

[JimD]

As a personal note, I could care less about the "discoloration" mentioned under Sealing Tablets. I do and will continue to use a similar product and the discoloration tells me I have installed "at least enough" of the product to be protected against nuisance leaks.

[KHE]

I didn't see Texaco on the list - Texaco/Havoline was the OEM supplier that worked with GM to develop DexCool.

[Texas Jim]

I didn't see Texaco on the list - Texaco/Havoline was the OEM supplier that worked with GM to develop DexCool.

If I remember right.... Texaco and Chevron merged a few years ago.

[JimD]

Correct.