Question

why are fluid more used to reduce friction?​

Answer 1

$\huge\mathbb{HELLO}$

Fluids are often used in lubrication, because they reduce the friction of solid parts rubbing against each other. Thin oils produce less friction than thicker oils with more viscosity.

Answer 2

Answer:

Fluids are often used in lubrication, because they reduce the friction of solid parts rubbing against each other. Thin oils produce less friction than thicker oils with more viscosity. In engines, there is a trade-off, because once a thin oil becomes very hot, it may become too thin to protect the engine.