why is oil mixing with coolant in coolant tank


Asked by Feb 18, 2014 at 05:05 PM about the 2006 BMW 3 Series 320d

Question type: Maintenance & Repair

2006 bmw 320 msport

3 Answers

Tom Demyan

The oil filter housing gasket usually fails around 40k-60k and oil then leaks into the coolant.

21 out of 21 people think this is helpful.

Sounds like an intake manifold gasket, head gasket, or cracked cylinder head. I'd have it diagnosed by either BMW or a service facility that specializes in imports. Don't take it to a run of the mill garage. They'll have no idea of what they're looking at!! HTH. -Jim

3 out of 3 people think this is helpful.

Thanks for accepting me. I have a problem my bmw 2006 e90 is mixing woter and oil in the woter bottle help me guyz plz

19 out of 19 people think this is helpful.

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