Oil Viscosity

Oil viscosity definitly as the measure of an oil thickness and ability to flow at certain temperatures. Oil viscosity is very influential on the machine performance. As a maintenance mechanic we know some oil as a lubricant, each component of the frictional machine requires lubrication to minimize wear and tear.
Oil as a cooling engine components, operating machinery would generate heat, the oil can absorb excess heat directly from the engine components.
When the oil is hot it wil influence to oil viscosity. High temperature oil wil reduce trhe oil viscosity, it's mean oil performance to lubricate machine component will be reduced.
At some machine this problem can be overcome by using the oil cooler.