Guys, you have to remember that the term "polyether amine" is just a type of substitutive nomenclature that is used to identify a number of possible different chemical compounds.
There are many different compounds for "polyether amine," most of which are proprietary. This is why the CAS (Chemical Abstracts Registry) Number is always listed as "proprietary" on MSDS's for PEA-containing products. If the manufacturer were to provide a CAS number for their specific PEA, they would be divulging the compound and be giving away proprietary information.
While it is true that Chevron was first to apply PEA technology to the chemistry of fuel additives, a number of additional manufacturers have undertaken the process of reformulating and improving this technology since Chevron's patent expired some years ago.
All these different PEA compounds are also formulated in different concentrations. So simply looking at the percent composition of PEA on a MSDS is not going to be fully indicative of a product's ability to clean.
Take this example. Let's say Product A contains 30% of a diluted form of a PEA compound. Product B contains 10% of a highly concentrated PEA compound. Which will clean better? You might assume Product A, because it contains a higher percent of PEA. But you could easily be wrong.
There have been many advances in the various PEA formulae since Chevron originally introduced Techron 20+ years ago. Not least of which is the concentration of various PEA compounds being used today.
Just wanted to point this out, thanks.