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Home >> BMW >> 2018 >> 340i xDrive Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 185 (Engine - Operating Fluids) >> 1.0 General Information >> Good Corrosion Inhibition

Good Corrosion Inhibition

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The engine oil must prevent corrosion on engine components under all circumstances. Corrosion and rust inhibitors are added to displace water and acids from metal surfaces so that oil coats them.