Petroleum and related products. Determination of shear stability of lubricating oils containing polymers. Method using a tapered roller bearing— 20 стр.
Testing of lubricants - Testing in the Shell four-ball tester - Part 6: Determination of shear stability of lubricating oils containing polymers— 3 стр.
Petroleum and related products -- Determination of the extreme-pressure and anti-wear properties of fluids -- Four ball method (European conditions)— 22 стр.