Scum in coolant reservoir

[Spinifex]

Hmmmm, yours isn't that old either.

Wonder if the radiator/cooler assembly on the Skoda's is bespoke, or just VW stuff?

Surprised the engineering hasn't been improved on them though - the oil cooler leaking into the radiator has been a known issue on VWs for years apparently......

[Umai Naa!!]

I would say the suspected faulty parts are 1, 7, 15, and 16.

1 is the main bracket that supports the alternator, the a/c compressor, the oil filter, and the oil cooler. Has engine oil and coolant passing through it.

7 is the seal to the engine block.

15 is the oil cooler. This has engine oil and coolant passing through it.

16 is the seal between the cooler and the bracket.

[Spinifex]

Ahhhh...... so I'm not sure which parts are being ordered from overseas.

All the service agent told me, was the the radiator & oil cooler were one-piece, and that parts had been ordered from germany.
What those parts were, I'm unsure.

[Umai Naa!!]

They may well be ordering a radiator too, as it will be pretty clogged up.

[woofy]

Correct me if I'm wrong, but wouldn't this have messed up engine/turbo cooling pretty badly and also cause coolant to get into the engine oil? Or was it just a leak into the radiator, still a messy and pretty bad problem all around.

[Umai Naa!!]

Radiator is just a radiator on these. No internal heat exchanger for oil in them.

Oil in the coolant is more obvious, compared to coolant in the oil. Always best to treat it as if both have occurred.

[woofy]

OK to put it another way, from your diagram, there was a leak in a part that had separate oil and coolant pathways, so they mixed right?

[Umai Naa!!]

Correct.

[woofy]

Geeze it was bad enough when just the headgasket was all you had to think about, when did it become a good idea to make some more points for things to stuff up....

[Umai Naa!!]

At least head gasket failures in VAG stuff are pretty rare these days.