What is engine oil composed of?

[Judah]

Engine oil is composed of base oil and additives. Engine oil, also known as engine lubricant, functions to: 1. Reduce friction and high temperatures; 2. Absorb shock and cushion; 3. Prevent rust and corrosion; 4. Cool down the engine; 5. Clean and remove contaminants. The hazards of using inferior quality engine oil include: 1. Reduced power output of the generator set; 2. Damage to the lubrication of precision components such as the fuel pump and injector; 3. Degradation of the oil quality, diminishing its performance; 4. Adverse effects on the engine's combustion efficiency. The method for changing engine oil is: 1. Lift the vehicle with a jack, locate the drain plug, and loosen it to drain the oil; 2. Remove the oil filter and place a container beneath it; 3. Replace with a new oil filter and add fresh engine oil.