What are the disadvantages of adding too much car oil?

1, less oil will lead to cylinder pulling.

2. Too little oil will cause poor lubrication and wear of parts, and too much oil will cause increased running resistance.

Engine oil is called the "blood" of a car. It can play the role of lubrication and wear reduction, auxiliary cooling and cooling, sealing and leakage prevention, rust prevention and corrosion prevention, shock absorption and buffering for the engine.