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I drive a 2006 Bmw X5 3.0D and on my way home the car started overheating, it cut out once and i stopped. I was close to my house and got there once the car cooled down a bit but the temp went up very quick when i drove home. I opened the bonnet and the radiator bottle was very hot and the one small hose at the back was making a boiling niose and there is a black oily sludge coming out of the bottle. Someone pls help

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  • Frankie De Souza
    Frankie De Souza Dec 12, 2012

    Is there any way to test or checks i can do to find out what it is perhaps?

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  • Cars & Trucks Master
  • 8,755 Answers

What you have is a really bad head gasket or a crack in the head/block. The cylinder head will have to come off to determine the exact issue.

Posted on Jul 19, 2017

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Tech Jenkins
  • 359 Answers

SOURCE: car suddenly started overheating

radiator fan relay, radiator fan motor, failed thermostat, air bubble in radiator, clogged coolant tank reservoir hose

Posted on Aug 29, 2008

  • 31 Answers

SOURCE: Overheating/No Heat 2001 Impala

change the thermostat and the temp gauge in the radiator

Posted on Mar 08, 2009

  • 39 Answers

SOURCE: 2000 528i bmw

wow sorry to hear that it sounds like the head gskt blew but im scratching my head on that one because that is not very comon for the engine in that car, But i would say head gskt since the oil pressure in the car runs way higher than the pressure in the cooling system so thats why it would have blown a hole in the radiator, and mixed in with the coolant, i would not say that the place that changed your oil is at fault they could not have caused that to happen

Posted on Apr 01, 2009

  • 8 Answers

SOURCE: overheating problem

looks like you have done everything but the problem with your car is that the cylider head gasket has gone have a look at the dipstick or remove the oil filler cap if it looks like mayo then 100% head gasket has failed you said no water on the floor so it must have gone into engine only way this can happen is head gasket failing, if you have put lot of water in to the cooling system then your sump will be full of oil water mix.

let us know your findings so we can help you more if you need it

Posted on Apr 22, 2009

localwonder
  • 6784 Answers

SOURCE: Bublling in the thermostat housing and very hot upper radiator hose

I recommend flushing the radiator thoroughly if not done recently. there seems to be some sort of blockage in the radiator at this time. if you get lots of metal fragments that are flushed out during this flush, i will then recommend a rebuild on the radiator or replacement of the radiator. make sure the cooling fans are cycling on time as well.

Posted on May 21, 2009

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