ACFTD, GPM, PNA – Bingo!

From Noria, a list of lubrication and oil analysis terms and their definitions: Lubrication and Oil Analysis Dictionary. Just about any term you can think of is defined here.

Synthetic Oil Study

An interesting comparison of oil lab results from a DIY site (not an oil company). http://neptune.spacebears.com/cars/stories/oil-life.html