Answer
Warming up the engine can help us to complete the oil change more quickly as the oil will flow at a faster rate.
Work Step by Step
We can think of viscosity as the resistance of a fluid to flow. A fluid with a high viscosity will not flow easily, while a fluid with a low viscosity will flow more easily.
Increasing the temperature of a fluid lowers a fluid's viscosity. If we warm up the engine, the oil's viscosity will decrease, which allows the oil to flow more easily. Warming up the engine can help us to complete the oil change more quickly as the oil will flow at a faster rate.
