Hi,

 

I am owning SKODA OCTAVIA 2004 AT 1.9TDI. I am facing problem as coolant is getting mixed with oil(Dark Brown color on the top of coolant).Kindly if any one clarify why it is happening.

 

 

Regards,

Karthik

Usually a sign of head gasket failure? Although pretty rare on these 1.9 lumps as I understand it.

Welcome to the forum.

 

Have you had the car long enough to know that Radweld / K-Seal or similar has not been put in.

& that the coolant is good and fresh and at the correct ratio.

 

Any other symptoms, 

like what does it look like if you look inside the oil filler cap.?

I agree with "thesquiff", both about the likely fault and its rarity. More specifically, you appear to have a gasket failure between the oil and water ways around the bores.

 

There is still a chance of it being something else if you do a low mileage and there's a substance like mayonnaise or yoghurt on the inside of the valve cover. In this case, your engine never gets up to temperature and the issue is caused by condensation.

Could be the oil cooler, but again its not that common

+1  it's where I'd check first :sun:

Oil coolers are pretty common and certainly more so than a head gasket.

Another vote for the oil cooler.

 

Here was the coolant on mine after the internals of the oil cooler corroded and failed.

 

Looks OK from this angle...



Take a peek inside though and it's not so pretty...

 

Kaput!

I had same with Porsche, oil cooler gone but skoda dont have them i suppose

Eh? See posts #5, #6, #7 and #8.

 

Some Skoda engines do have oil coolers 

Eh? See posts #5, #6, #7 and #8.

 

Some Skoda engines do have oil coolers 

They probably all do apart from the little engines in the citigo maybe. Certainly all the diesel vag cars for the last 2 decades have had them