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Mark
Mark, Peugeot Certified Technician
Category: Peugeot
Satisfied Customers: 1504
Experience:  Fully qualified technician and MOT tester.
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Hi,my 2004, 206, 1.4 auto has muddy brown oil sludge in coolant

Resolved Question:

Hi,my 2004, 206, 1.4 auto has muddy brown oil sludge in coolant expansion bottle..(engine oil is ok, no water there!) car done only 44,000miles!,starts and drives ok, but can become a little hesitant later.engine has no sign of oil or water leaks, but expansion bottle has lost some water,leaving the sludge.I suspect head gasket, but!, could it only be the oil cooler?..if indeed my engine has one?..direction of help, please!..Phil
Submitted: 3 years ago.
Category: Peugeot
Expert:  Mark replied 3 years ago.

Mark :

Hello, my name is XXXXX XXXXX I will try help you with this.

Mark :

The first thing to do is completely flush the cooling system.

Mark :

I usually flush the system using a liquid detergent and fresh water.

Mark :

It can take two to three flushes to completely remove the sludge.

Mark :

Next would be to pressurise the system and check for any leaks.

Mark :

If you can't see any leaks but the pressure drops then it could be a faulty headgasket.

Mark :

At this point you could try a sealing solution to repair the leak or choose to remove the head and replace the gasket.

Customer:

thanks mark, will do that first, ...so does my engine not have an oil cooler?..reason i ask is that my old vw golf auto, had one and showed same symptoms as the peugot, replaced oil cooler, ..no more probs!, phil

Mark :

This engine didn't come with an oil cooler as standard.

Mark :

You can check to see if it has coolant hoses going to the area of the oil filter housing.

Customer:

thanks mark, will do, and act on your advice, phil

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