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Home >> BMW >> 2014 >> 640i xDrive 2D Convertible >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Operating Fluids >> 1.0 General Information >> Anti-Foaming

1.0 General Information: Anti-Foaming

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The oil is forcefully mixed with air during engine operation. Heavy foaming will lead to impaired lubrication and reduction in oil flow rate. To prevent foaming, anti-foaming additives are mixed with the oil.