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Where is the oil filter located on the BMW 120i?

1 Answers

DelEva

07/30/25 7:27am

The oil filter on the BMW 120i is located at the front lower side of the engine in the front of the car. Function of the oil filter: The oil filter, also known as the oil filter element, is designed to remove impurities, sludge, and moisture from the engine oil, delivering clean oil to all lubrication points. Engine oil inherently contains a certain amount of sludge, impurities, moisture, and additives. During engine operation, metal particles, airborne contaminants, and oil oxidation byproducts increase the level of impurities in the oil. If unfiltered oil enters the lubrication circuit, these impurities can reach the friction surfaces of moving parts, accelerating wear and reducing the engine's lifespan. Oil filter grades: Due to the high viscosity of engine oil and the elevated level of contaminants, oil filters generally consist of three stages to enhance filtration efficiency: the oil suction filter, the primary oil filter, and the secondary oil filter.

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