What are the adverse effects of overfilling engine oil in a truck?

[LaCaden]

The adverse effects of overfilling engine oil in a truck are as follows: 1. Increased fuel consumption and reduced power: If excessive lubricant is added, violent agitation of components will occur during engine operation, increasing internal power loss. The elevated oil level also increases crankshaft resistance, leading to greater oil churning loss. This results in reduced power output, higher fuel consumption, noticeable sluggish acceleration, and increased noise during driving. 2. Decreased engine power: Significantly more oil entering the combustion chamber leads to increased carbon deposits, raising piston movement resistance and reducing engine power. 3. Failed emission standards: Increased oil entering the combustion chamber worsens exhaust emissions. In severe cases, it may cause catalytic converter poisoning and damage. 4. Oil leakage: Vigorous oil agitation raises crankcase pressure. Prolonged pressure on crankshaft oil seals accelerates aging and deformation, ultimately causing lubricant leakage while shortening its service life.