What are the manifestations of poor oil quality?

1 Answers
ElliotFitz
07/29/25 8:21pm
The manifestations of poor oil quality are: 1. Insufficient vehicle power; 2. Severe engine carbon deposits, shaking, and stalling; 3. Fuel pump failure and inability to start the vehicle; 4. EPC light on the dashboard illuminates; 5. Engine malfunction light turns on; 6. Excessive exhaust emissions. Engine oil, also known as engine lubricant, serves functions such as lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust and corrosion protection, as well as shock absorption and buffering. Engine oil consists of two components: base oil and additives. The base oil is the main component of lubricating oil, determining its fundamental properties, while additives compensate for and improve the shortcomings of the base oil's performance, endowing it with certain new characteristics, making them an essential part of lubricating oil.
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