How to Clean the Sludge on the Outside of the Engine?

[AaliyahMarie]

Methods for cleaning engine sludge: 1. Generally, 4S shops clean engine sludge by adding a cleaning agent to the engine lubrication system. Before changing the oil, the sludge cleaning agent is poured into the engine through the oil filler port, and the engine is started and kept idling for 5 to 10 minutes. Then, the engine is turned off, and the sludge cleaning agent is drained along with the oil. 2. During engine operation, the high-temperature working environment, wear from the relative movement and friction of various surfaces, and the combustible mixed gases entering the crankcase from the cylinders can all affect the performance and quality of the engine oil.