What are the advantages of Multi Viscosity Car Engine Oils?
A multi grade car engine oil is one whose properties have been artificially modified to reduce changes in its viscosity with temperature changes. A multi grade car engine oil will be more fluid at low temperatures and thicker at high temperatures than a mono grade car engine oil.That means that when the vehicle is not being used (for several hours), the engine oil sinks in the crankcase so that, on starting, it takes a certain amount of time (a few microseconds) to again reach all parts of the engine that need to be lubricated. Since a multi grade engine oil is more fluid at low temperatures, it reaches the various engine components more quickly than a mono grade oil, thereby reducing wear on starting.Multi grade engine oils usually produce fuel savings of 1.5 to 3% in comparison to mono grade oils.Multi grade oils provide better engine protection at low and high temperatures than monograde oils, in that they maintain optimum viscosity over car engine operating temperature range.
