Does adding too much engine oil have any impact?

[ReidLee]

Adding too much engine oil does have an impact, specifically: 1. Increased fuel consumption; 2. During engine operation, various components will experience intense agitation, increasing internal power loss; 3. Increased resistance on the crankshaft, affecting power output; 4. Worsened exhaust emissions, which in severe cases may cause the three-way catalytic converter to become poisoned and damaged. Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Engine oil consists of two parts: base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while additives compensate for and improve the shortcomings of the base oil, imparting certain new properties, making them an important part of the lubricant.