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Engine sludge first appeared in Australian cars in the late ’80s, this phenomenon can influence almost any make of later model petrol engine and worse still, can do serious harm to the engine.

1. What is Engine Sludge?

Engine Sludge, (also called Black Sludge) is the formation of thick deposits in the crankcase of petrol power plants. Normally, its formation results from inadequate servicing, for instance, using poor quality engine oil and missed or extended oil change intervals. Even though the sludge deposits can also accrue in diesel mills, they are mostly found in petrol units.

The engine sludge may be similar to heavy tar or grease and can be caused by the engine oxidation and thickening. The resulting material obstructs engine lubricating system, then provoking the engine to seize.

2. Engine Sludge in Diesel Engines:

Diesel oils are laid open to too much higher levels of combustion soot and un-burnt fuel and gradually, these contaminants lead to engine thickening. Like the petrol engines, this ultimately results in oil starvation.

Diesel-powered 4WDs and light commercial cars are most at risk of accumulating sludge due to small oil capacity, high power output, increased heat load from the turbochargers and fuel system issues, worn injectors for example.

3. How to Remove Engine Sludge:

To remove sludge from the engine, you should have the engine components dismantled, cleaned are repaired. In case of lesser amounts, you do not need to pull the engine to pieces.

4. How to Avoid Engine Sludge:

Inadequate car maintenance is one of the main causes of engine sludge, so to avoid it, have your car serviced regularly. Additionally, use the right and good quality filters and engine oils. Particularly for the diesel mills, fuel system maintenance is urgently required. As recommended, oil change intervals can be as little as 5,000 km to 7,500 km.

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