Posted 2/11/2019 17:18 (#7314227 - in reply to #7314216) Subject: RE: Can someone explain oils to me please
SAE50 gets much thicker as the temperature goes down.
SAE15W50 stays as thin as SAE15 when cooled to its lowest temperature and as stiff as SAE50 when heated to its maximum operating temperature. Most often the viscosity changes much less with high or low operating temperature compared to the viscosity changes with temperature of SAE50.