Sae 30 Oil Viscosity Vs Temperature. For automotive lubricants, empirical sae viscosity classification (sae standard j 300) is used. Viscosity of lube oil is determined by the society of automotive engineers (sae). For kinematic viscosity the normal temperatures for lubricants are 40c (104f).
The society of automotive engineers.
Viscosity of lube oil is determined by the society of automotive engineers (sae). For kinematic viscosity the normal temperatures for lubricants are 40c (104f). Oil viscosity differs from one lubricant to another with respect to temperature. This is because they lack additives that keep oil fluid in extremely cold temperatures, which can make cold starts difficult in winter time. Based on the range of viscosity the oil falls in at that temperature, the oil is graded as sae viscosity grade 20, 30, 40, 50, or 60. Some vehicle manufacturers provide a range of recommended motor oil viscosity grades based on the outside temperature in which the car is driven. The society of automotive engineers. Most oil produced by automotive oil manufacturers today is multigrade oil, designed to behave differently depending on the temperatures at startup and/or during operation.
