Originally Posted By: mechanicx
I don't believe that is the patent to Texaco's Dexcool but just an earlier precursor. All coolant meeting Dexcool specification have 2EHA. Texaco Dexcool contains 2EHA and sebacic and not benzoate and nitrates like this patent does.
If someone knows Texaco's Dexcool patent number that would be good.
That patent in a prior post is what Caterpillar's ELC-1 engine coolant is based on. I never said that the patent had anything to do with Dexcool. Still looking for the Dexcool patent itself using google. That is how I dropped the patent on Texaco for the ELC-1 coolant because I know that Texaco now Chevron/Texaco is Caterpillar's supplier for chemicals. They had to have developed this originally.
Now who is the original OEM GM supplier of Dexcool? If I know this I might be able to find that patent as well. If they (GM) have had other suppliers that information is also important.
Also for G-05 coolant do we know who the original formulator for this coolant is?
Also additional patent information on other specialty coolants are also of use here if they are from an original supplier/formulator of the coolant. If anyone knows of this I might be able to find those patents as well.
As for the old silicate/phosphate coolants there are numerous patents on the subject but there is IMHO no debate about this particular coolant type. In automobiles, if you have this coolant continue to use it with 2 year/24K miles length of service with what ever comes first between coolant changes.
The reason for the patents is that the formulations are spelled out in them to protect the chemistry. An MSDS sheet by law only needs to contain information if the chemicals in the formulation in the MSDS are toxic, mutagenic, teratogenic, radioactive, or otherwise flamible, explosive, or dangerous in large quantities. Many times exact formulations are considered trade secrets and are obfuscated in MSDS sheets.