Does Not Changing Engine Oil Increase Fuel Consumption?

[DelBentley]

Not changing engine oil can increase fuel consumption. Below are the specific functions of engine oil: 1. Shock absorption and cushioning: When the pressure at the engine cylinder port rises sharply, it suddenly increases the load on the piston, piston chips, connecting rod, and crankshaft bearings. This load is transmitted and lubricated through the bearings, providing a cushioning effect against the impact load. 2. Rust and corrosion prevention: The lubricating oil adheres to the surface of parts, preventing contact with water, air, acidic substances, and harmful gases. 3. Lubrication and wear reduction: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear, an oil film of sufficient thickness must be established between the two sliding surfaces, separating the relatively sliding parts to reduce wear. 4. Cooling: Engine oil carries heat back to the oil tank and dissipates it into the air, helping the radiator cool the engine.