👉 Road fluid, also known as motor oil or lubricating oil for vehicles, is a specialized liquid substance used to reduce friction between moving parts in automotive engines and other machinery. It serves multiple purposes: it lubricates components to minimize wear and tear, dissipates heat generated by engine operation, and helps prevent corrosion by forming a protective barrier on metal surfaces. Road fluid also aids in maintaining engine efficiency and prolongs the lifespan of critical components by ensuring smooth operation under various driving conditions.