Lubricating Oil Test

What quality tests are conducted for lubricating oil by manufacturers?

Lubricating Oil Lab Instrument includes Friction and Wear Tester, Micro Carbon Residue Tester, Foaming Characteristics Tester, Karl Fisher Water Content Tester, Evaporation Loss Tester, Oxidation Stability Tester, Water Separability Tester, etc performed as per related ASTM or ISO standard.