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Car maintenance general knowledge, this 10 most easily ignored! (5)

Too much oil -- it doesn't workWhen the oil in the engine oil sump is insufficient, the friction between the bearing and the journal will cause bad lubrication due to the low amount of oil, aggravate the degree of wear and even cause the accident of burning tile shaft.However, if the engine oil is too much, the crankshaft handle and connecting rod end will produce violent stirring during the operation of the engine, which not only increases the internal power loss of the engine, but also increases the oil splashed on the cylinder wall, resulting in the fault of burning exhaust oil.Therefore, the oil in the engine oil sump should be controlled between the upper and lower line of the oil ruler.