👉 Highway fluid, also known as motor oil or automotive lubricant, is a specialized petroleum-based product designed to reduce friction and wear between moving parts in vehicles, particularly in engines and transmission systems. It acts as a lubricant, allowing components to glide smoothly over each other, thereby minimizing energy loss and heat generation. Additionally, highway fluid contains additives that enhance its performance by improving viscosity stability, preventing sludge formation, and providing protection against corrosion and oxidation. These properties make it essential for maintaining the efficiency, longevity, and reliability of modern vehicles.