To be honest, I’m getting a little cynical about the whole (whale) oil industry.
Here is a neutral ongoing study
http://neptune.spacebears.com/cars/stories/oil-life.html
Amsoil told 2shelbys that “The majority of AMSOIL synthetic lubricants are formulated with polyalphaolefin (PAO) synthetic base stocks.”
But according to all sources that I can find, it is a diester (non-PAO).
Ed Newman ,Marketing & Advertising Manager, AMSOIL INC.
http://www.awdist.com/americascarshow/
“AMZOIL (Amatuzio-oil) was created and became the first 100% synthetic diester based engine oil to pass the API sequence tests and receive API qualification in 1972.
The following year Mobil Oil began marketing the first PAO based engine oil overseas and in 1975 they began test marketing a synthetic PAO based synthetic in the U.S. called Mobil 1.”
And in addition to not being able to get information from the manufactures and not knowing what the hell they are talking about anyway, the manufactures probably change oil components on a daily basis.
I think we are screwed.
It’s all mouse’s milk.