Answer to Question #178895 in Mechanical Engineering for aaron

Question

What property of a grease affects the temperature it may be subject to?

Answer 1

High temperatures harm greases more than they harm oils. Grease, by its nature, cannot dissipate heat by convection like a circulating oil. Consequently, without the ability to transfer away heat, excessive temperatures result in accelerated oxidation or even carbonization where grease hardens or forms a crust.