What is the engine breather for in the lubrication system?

The engine breather, also known as a crankcase ventilation system, serves to release gases and vapors that accumulate in the crankcase during engine operation. This helps maintain optimal pressure within the engine and prevents the buildup of harmful contaminants. Additionally, the breather allows fresh air to enter the crankcase, promoting better combustion efficiency and reducing emissions. Overall, it plays a critical role in maintaining engine health and performance.