Well then obviously Nye is in error as the GM label clearly and unambiguously states a different chemical composition from whats listed on the MSDS sheet.
I can read just fine! LOL I can just as easily state that the print on the GM bottle is in error or more likely is just incomplete. I cannot see how Nye would incorrectly list the GM part number on one of their data sheets.
Nothing in the two descriptions leads me to believe they are different chemical compostions. I spent some time looking up the CAS numbers and the chemical compound names. Essentialy, both bottles contain a synthetic phosphate ester compound. Unfortunately, the Nye MSDS does not list many compounds because the 605 formula is proprietary to Nye.
I am not a chemist, but I did do an unscientific test where I had a bottle of each fluid. The smell is identical, the color is identical and the viscosity seems to be identical. I have also handled the Nye 605 fluid and it, too is identical to me. Now all that means nothing unless I get Duane Nettles on board to do a final blind taste test of all three compounds!
Any way, bottom line tonight is that neither of us has enough conclusive proof to offer at this time. If I have time next week, I might try to call Nye, Eaton and possibly Magnuson to see if they can shed some light on all this. I have always thought the oils to be identical, it would be nice to know once and for all.
Much of the CAS (Chemical Abstract Service) information was picked up here:
http://www.scorecard.org/
Actual CAS site:
http://www.cas.org/
Here are some boring definitions I picked up on the Chevron site:
http://www.chevron.com/oronite/reference_materials/dictionary_of_lubricant_terms/li_dictionary_e.asp
SYNTHETIC LUBRICANT - lubricating fluid made by chemically reacting materials of a specific chemical composition to produce a compound with planned and predictable properties; the resulting base stock may be supplemented with additives to improve specific properties. Man synthetic lubricants - also called synlubes - are derived wholly or primarily from petrochemicals; other synlube raw materials are derived from coal and oil shale, or are lipochemicals (from animal and vegetable oils). Synthetic lubricants may be superior to petroleum oils in specific performance areas. Many exhibit higher viscosity index (VI), better thermal stability and oxidation stability, and low volatility (which reduces oil consumption). Individual synthetic lubricants offer specific outstanding properties: phosphate esters, for example, are fire resistant, diesters have good oxidation stability and lubricity, and silicones offer exceptionally high VI. Most synthetic lubricants can be converted to grease by adding thickeners. Because synthetic lubricants are higher in cost than petroleum oils, they are used selectively where performance or safety requirements may exceed the capabilities of a conventional oil. The following is a list of the principal classes of synthetic lubricants: alkylated aromatics(organic hydrocarbon), olefin oligomers(organic hydrocarbon), dibasic acid esters (organic ester), polyol esters (organic ester), polyglycols, phosphate esters, silicones, silicate esters, halogenated hydrocarbons.
ESTER - chemical compound formed by the reaction of an organic or inorganic acid with an alcohol or with another organic compound containing the hydroxyl (-OH) radical. The reaction involves replacement of the hydrogen of the acid with a hydrocarbon group. The name of the ester indicates its derivation; e.g., the ester resulting from the reaction of ethyl alcohol and ascetic acid is called ethyl acetate. Esters have important uses in the formulation of some petroleum additives and synthetic lubricants. See dibasic acid ester, phosphate ester.
DIBASIC ACID ESTER (DIESTER) - synthetic lubricant base; an organic ester, formed by reacting a dicarboxylic acid and an alcohol; properties include a high viscosity index (VI) and low volatility. With the addition of specific additives, it may be used as a lubricant in compressors, hydraulic systems, and internal combustion engines.
PHOSPHATE ESTER - any of a group of synthetic lubricants having superior fire resistance. A phosphate ester generally has poor hydrolytic stability, poor compatibility with mineral oil, and a relatively low viscosity index (VI). It is used as a fire-resistant hydraulic fluid in high-temperature applications.