What are the symptoms of deteriorated engine oil?

1 Answers
EmersynRose
07/29/25 11:58am
The symptoms of deteriorated engine oil are: 1. Decreased viscosity; 2. Severe water-like thinning; 3. Presence of metal particles and sludge. The causes of engine oil deterioration include: 1. Filter failure; 2. Water ingress into the engine; 3. Poor crankcase ventilation and inadequate heat dissipation; 4. Cylinder wear or piston ring damage; 5. Prolonged oil usage. Engine oil, also known as motor lubricant, serves to lubricate and reduce friction in the engine, assist in cooling, provide sealing to prevent leaks, prevent rust and corrosion, and act as a shock absorber. Methods to address deteriorated engine oil include: 1. Timely oil changes; 2. Regular inspection of oil condition via the dipstick.
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