Ethos FR:
What are Esters & How do They Work?

What are Esters and How Do They Work?

In the simplest terms, esters can be defined as the reaction products of acids and alcohols. Thousands of different kinds of esters are commercially produced for a broad range of applications. Within the realm of synthetic lubrication, a relatively small but still substantial family of esters have been found to be very useful in severe environment applications.

Esters have been used successfully in lubrication for more than 50 years and are the preferred stock in many severe applications where their benefits solve problems or bring value. For example, esters have been used exclusively in jet engine lubricants worldwide for over 40 years due to their unique combination of low temperature flowability with clean high temperature operation. Esters are also the preferred stock in the new synthetic refrigeration lubricants used with CFC replacement refrigerants. Here the combination of branching and polarity make the esters miscible with the HFC refrigerants and improves both low and high temperature performance characteristics. In automotive applications, the first qualified synthetic crankcase motor oils were based entirely on esters and these products were quite successful when properly formulated. Esters have given way to *PAOs (Polyalphaolefins) in this application due to PAOs lower cost and their formulating similarities to mineral oil. Nevertheless, esters are nearly always used in combination with PAOs in full synthetic motor oils in order to balance the effect on seals, solubilize additives, reduce volatility, and improve energy efficiency through higher lubricity. The percentage of ester used in motor oils can vary anywhere from 5 to 25% depending upon the desired properties and the type of ester employed.

Ester lubricants have already captured certain niches in the industrial market such as reciprocating air compressors and high temperature industrial oven chain lubricants. When one focuses on high temperature extremes and their telltale signs such as smoking, wear, and deposits, the potential applications for the problem solving ester lubricants are virtually endless.

In many ways esters are very similar to the more commonly known and used synthetic hydrocarbons or PAOs. Like PAOs, esters are synthesized from relatively pure and simple starting materials to produce predetermined molecular structures designed specifically for high performance lubrication. Both types of synthetic basestocks are primarily branched hydrocarbons which are thermally and oxidatively stable, have high viscosity indices, and lack the undesirable and unstable impurities found in conventional petroleum based oils. The primary structural difference between esters and PAOs is the presence of multiple ester linkages **(COOR) in esters which impart polarity to the molecules. This polarity affects the way esters behave as lubricants in the following ways:

Excerpts Source: Esters in Synthetic Lubricants -- The Hatco Corporation

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Five Independent Sources & Studies:

Esters In Lubricants; (1) Turbine Oil: High Head and Thrust ,

Esters In Fuel; (2) Coconut Fuel (3) Biofuel from Jatropha curcas (4) Scania RME Fuel (5) Mercedes Diesel Experiences

Conclusion: Other companies have lately begun a serious investigation into the use of one or more natural or synthetic esters as complete fuel replacements, and candidly admit some of the limitations of their products, while Ethos Fuel Reformulator (patented ten years ago) contains two hundred and eighty eight (288) distinct cleaning and lubricating Esters. Ethos (FR) mixes with all fuels, even Bio-diesel (a large distributor here in the USA). The truth is that esters work best when properly mixed with standard fuels and lubricants. Why? What about Practicality? If you can't afford to use it, it won't have much real effect on the environment, will it? It is a proven fact, you don't pay for Ethos Fuel Reformulator, it pays for itself. It's engineered for full time use. Ethos (FR) is a Quantum Leap ahead of all others.

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