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Robert, Peugeot Technician
Category: Peugeot
Satisfied Customers: 4708
Experience:  Fully qualified 19+yrs exp/self employed technician in the UK
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I have a peugeot 308 turbo recently bought second hand.after

Customer Question

i have a peugeot 308 turbo recently bought second hand.after a hefty bill servicing it i stiil had a low coolant level coming out n the mechanics at peugeot changed one of the hose.thenafter 4 weeks engine oil level low warning came on.after adding the engine oil 2 weeks after again the coolant level low warning came on.topup the coolant with water n 1 week layer the same warning came on.this time there is oil sludge in the coolant container.please help.
Submitted: 2 years ago.
Category: Peugeot
Expert:  Robert replied 2 years ago.

Hi..there apoligies for the delay..

Had you had any issues with overheating or general engine running missfiring etc?

Had you noticed any leaks from under that car at all..when cold or after a run?

Can you provide the full VIN number "vehicle identification number"

Customer: replied 2 years ago.

i am in malaysia and am not sure of car number is ***** 9308.

i did not note any overheating or leakage.dont have problem with the engine.just sludge in coolant tank and persistent low coolant leveldespite change of hose at peugeot service centre here

Expert:  Robert replied 2 years ago.

Hi..there..thanks for your reply..

Normally the VIN number is ***** below the bottm corner windscreen/dashboard - however if there is engine oil in the coolant expansion tank..then the only way oil can get into that provided it is engine oil "check level" then you either have a failed - oil cooler if fitted..usually its part of the oil filter housing in which you'll see a chamber as part of the housing where you'll see two coolant hoses going to and from or a headgasket fault - have they pressure tested the coolant system just incase there is actually leak of sorts or a combustion leak test,compression test on each cylinder?..both tests should reveal otherwise...but as you describe and this is without knowing the full vin number to see what engine you have exactly - id be more inclined to be looking at the oil cooler or replace even..after which you need to ensure the entire coolant system is flushed out of oil contamination you need a few of the coolant system flush addtives run through it a few times to make sure all but most of contaminated coolant/oil is clear..if after you have had the oil cooler replaced..and engine oil is still getting into the coolant then it likely the headgasket has failed..I do hope this helps