What does the VI improver shear stability index stand for! how its measured, and how its relatd to the viscosity % loss.
as far as i know the higer the SSI the better is the performance and the higher is the cost. so what is the avreage accepted value for the SSI!
as far as i know the higer the SSI the better is the performance and the higher is the cost. so what is the avreage accepted value for the SSI!
