What is the function of a engine's lubrication system?

The lubrication system of an engine serves to reduce friction between moving parts, thereby minimizing wear and tear. It circulates oil to lubricate components such as bearings, pistons, and camshafts, helping to maintain optimal operating temperatures by dissipating heat. Additionally, the system cleans and protects engine parts by preventing corrosion and carrying away contaminants. Overall, it ensures smooth engine operation and longevity.