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1984-1991 BMW 3 Series Oil Change (Straight 6 Models)

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Installing the Drain Plug

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Finger tighten the drain plug back into the oil pan.

Use your 17 mm wrench to tighten the drain plug.

Do not overtighten the drain plug. It is made of steel and the oil pan is made of aluminum, and thus the threads on the oil pan strip easily.

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