What Causes Water in Diesel Engine Oil?

1 Answers
LaHaley
07/30/25 2:27am
Diesel engine oil can become contaminated with water due to the following reasons: 1. Cylinder liner damage: If cracks develop in the cylinder liner, coolant can seep through the cylinder wall directly into the engine oil pan; 2. Engine water plug leakage: Severely aged engine water plugs will inevitably leak, allowing coolant to mix directly with the oil in the pan; 3. Radiator damage: Damaged radiator hoses can also lead to water contamination in the engine oil. Engine oil, motor oil, or engine lubricant is a substance enhanced with additives in base oil, primarily containing anti-wear additives, detergents, dispersants, and multi-grade viscosity index improvers. Engine oil is used for lubricating internal combustion engines.
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