1. Dilution of Engine Oil: Diesel fuel has a lower viscosity compared to engine oil, and when it mixes with the oil in the sump, it dilutes the oil, reducing its lubricating properties. This can cause increased friction between engine parts, leading to wear and tear.
2. Engine Oil Breakdown: The presence of diesel fuel in the oil can break down the chemical structure of the oil, causing it to lose its key properties such as viscosity, detergency, and anti-wear capabilities. This can further exacerbate engine wear and reduce the oil's effectiveness.
3. Loss of Oil Pressure: As diesel fuel dilutes the oil and reduces its viscosity, it becomes thinner, leading to a drop in oil pressure. Low oil pressure can cause damage to engine bearings and other critical components due to insufficient lubrication.
4. Engine Deposits and Sludge Formation: Diesel fuel contains heavier hydrocarbons compared to gasoline, and when it mixes with engine oil, it can form deposits and sludge within the engine. These deposits can clog oil passages, restrict oil flow, and interfere with proper engine lubrication.
5. Increased Engine Wear: Insufficient lubrication due to oil dilution and breakdown can lead to increased wear and tear on various engine components, including the pistons, piston rings, cylinder walls, and bearings. This can result in decreased engine performance, reduced fuel efficiency, and potentially lead to engine failure.
6. Engine Misfiring and Rough Running: Diesel in the oil can cause engine misfires as it alters the combustion process. Misfires can result in rough engine running, reduced power output, and increased emissions.
7. Damage to Fuel Injectors: If diesel fuel accumulates in the oil, it can reach the fuel injectors and affect their performance. The reduced lubricating properties of the diluted oil may hinder the movement of the injector components, potentially causing sticking or damage to the injectors.
To prevent these problems, it's crucial to promptly investigate and rectify any issues that allow diesel fuel to mix with the engine oil.
