RE: KL200
Shlomo,
Klotz, the manufacturer of this oil does not think it is very good.
Please read the [link=http://www.klotzlube.com/tech/KL-200.pdf]KL-200 tech sheet[/link] and the [link=http://www.klotzlube.com/tech/BC-175-1.pdf]BéNOL tech sheet[/link], to understand the difference.
If you asked about the Sachs Aerosynth II/III/Aerosave, or the CooperFuels synthetic lubes, my reply would have been quite different; at least from the lubricity aspect.