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

4 Answers

254,425

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

29 of 29 people found this helpful.
70,255

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

4 of 4 people found this helpful.
410

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

41 of 41 people found this helpful.
40

My 2003 X5 has oil in coolant,but not water in oil . I started to pull the cylinder head,but remembered that wife said the transmission was acting funny. I drained the transmission fluid it was almost gone and mixed with water. Check this first before you pull half the motor apart like me. The only place it can get in is the cooler.

4 of 4 people found this helpful.

Your Answer

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 33,172 nationwide 3 Series listings starting at $1,000.

ZIP:

BMW 3 Series Experts

  • #1
    Tom Demyan
    Reputation
    5,040
  • #2
    Robert Charlson
    Reputation
    1,620
  • #3
    Matt Mankinen
    Reputation
    1,240
View All

Related Models For Sale

Used BMW 5 Series
444 Great Deals out of 16,368 listings starting at $1,995
Used BMW M3
48 Great Deals out of 1,780 listings starting at $5,995
Used Mercedes-Benz C-Class
635 Great Deals out of 26,013 listings starting at $1,995
Used Audi A4
271 Great Deals out of 11,336 listings starting at $1,999
Used Ford Mustang
730 Great Deals out of 38,316 listings starting at $895
Used Mercedes-Benz E-Class
469 Great Deals out of 19,851 listings starting at $1,400
Used BMW 7 Series
157 Great Deals out of 5,844 listings starting at $2,500
Used BMW X5
443 Great Deals out of 12,266 listings starting at $2,000
Used Dodge Charger
441 Great Deals out of 27,829 listings starting at $1,979
Used Honda Accord
1,111 Great Deals out of 61,915 listings starting at $999
Used BMW 6 Series
82 Great Deals out of 2,687 listings starting at $5,700
Used BMW 1 Series
57 Great Deals out of 1,016 listings starting at $5,995
Used Honda Civic
818 Great Deals out of 73,280 listings starting at $1,400

Used Cars For Sale

2017 BMW 3 Series For Sale
201 Great Deals out of 8,248 listings starting at $24,984
2016 BMW 3 Series For Sale
57 Great Deals out of 1,703 listings starting at $18,980
2015 BMW 3 Series For Sale
48 Great Deals out of 1,389 listings starting at $15,995
2014 BMW 3 Series For Sale
293 Great Deals out of 5,524 listings starting at $11,995
2013 BMW 3 Series For Sale
47 Great Deals out of 1,596 listings starting at $10,495

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.