you wrote and I quote
Quote:
organometallic compounds (such as Molybdenum dithiophosphates, Molybdenum dithiocarbamates, Antimony dithiocarbamates) have shown their ability to build and maintain strong boundary lubrication films under severe load conditions and heat.
Does the feature of providing a strong boundary lubrication film also means that it increases drag as it will not shear/break easily, especially when used in the engine oil?
edit: I guess I should have read more...you already provided the answer here. Should I read it as it does not increase the drag?
Quote:
The exceptions are the organometallic compounds listed above. Friction modification films consist of orderly, close-packed arrays of multimolecular "whiskers," loosely adhering to each other. The outer layers are sheared-off easily, allowing for low coefficient of friction. The phenomena can be described as a deck of plastic coated playing cards lying on the table and sliding off the top card easily.