Thanks shaw, for sharing your research and your balanced views. You're a asset on this board. Your analysis is at a level I frequently see on Motley Fool boards. You're not a "Fool" are you?
Not true. As I posted early on that board, here is a patent from Exxon: " Long life lubricating oil composition with very low phosphorus content". http://www.freepatentsonline.com/20050026792.html