The spec sheet on the Neo 0W5 says its viscosity index is 180, pour point –80 and flash point 440.
Didn't see anything on the 40 and 100 cSt viscosity, but it did mention 0% viscosity increase over 5 hrs.
Neo also says the oil registered 3500 on the Falex film strength test where most synthetics only do 1350 and dinos 700.
One of the technical people at Neo (an older gentleman, very knowledgeable) told me over the phone that it's fine to use in any car where the manufacturer recommends a 5W or 10W-30. His only reservation was using it in extremely hot climates over 100F. Then he said you might want to switch to 5W30 until the weather turns cooler.
The oil was originally developed for use in arctic exploration, and then the racing guys started getting excited about it.
He also said your engine with the 0W5 won’t show much oil consumption until your drain interval gets to 14-15K miles, then it starts using some.
Just thought I’d pass this along FWIW. As a WRX owner, I’m always looking for ways of getting faster turbo spool-up at low rpms, plus the potential increases in mpg and hp, so this oil looks very attractive right now (only drawback---$10 qt.!!)
[ June 30, 2003, 09:06 PM: Message edited by: Rexman ]