I was doing my regular tech research and I found this:

http://www.animegame.com/cars/Oil%20Tests.pdf

you need adobe acrobat reader to view it, if not here is a link.

http://www.adobe.com/products/....html

Some of the oils mentioned on there are not off the shelf here locally, but a few are and its interesting what their test results are....

Let me know what you guys think.