Hi David:

Thanks for the reference, but not much help for us turbine pilots, IMO.......this article is similar to those published in so called "Lay Medical Journals" for patient consumption......we put those in waiting rooms for patients to read and educate themselves a bit about current diagnoses and treatment.....these are not to be confused with the New England Journal of Medicine or the British Medical Journal, or myriad other high quality, refereed journals, where the real research data is published....

The author admits that there are no scientific studies, i.e. double blinded studies, with carefully controlled statistics, and sample sizes large enough to be statistically significant at the p<.001 level......without those kinds of studies, with the large number of vague symptoms listed and possible other toxic agents in the air, no definite conclusion can be drawn as to an actual culprit......

That is not to say that I take a cavalier attitude toward TCP and other organo-phosphates......for years, TCP was used as an additive in gasoline here in the states....you could even buy small cans of it to add yourself to gas and oil......this was pyrolized in the car engines and spewed out the exhausts for many years until their use was banned......OP's are still in use world wide in pesticides and are also present in synthetic oils, not specified as turbine oils....

Problem is no definite numbers exist for short term exposures like we have in model jet flying, or even in cabin environments as the article notes.....

Having said all that, I do handle Aeroshell 500 with care.....I use nitrile gloves when filling up a new 5 gallon kero jug, I promptly wipe off any fuel off my hands when refueling, I don't stand downwind of running turbines if I can help it, and never run a turbine in any kind of a closed space......

I also will be trying out some Mobil DTE light as I own (2) 54 size Wrens, one of which I built myself and can readily disassemble and check the bearings and combustor myself.......if all goes well, as I expect it will based on recent acceptance of DTE and other 2-stroke oils by Wren, I will probably be moving up the big-dollar food chain slowly in my other engines including AMT NL Peggy and Oly, JetCat Titan and P180.......

Maybe that process will eventually be accelerated by having all the turbine manufacturers run some test beds themselves, and contract with a few modelers who put lot of hours on engines/yr to do some field testing, with, say, the 25 hour inspection completed gratis.......

Tom