Thread: Diesel in coolant

Hi all

I'm a newbe and would like to thank you all for a great forum.
My problem: Diesel in coolant header tank on a 2006 D3 TdV6.
The coolant level is rising after only a short trip and a clear liquid is swimming on top of the coolant, you can clearly see the difference between coolant and the water/fuel mix on top. Both fuel coolers have been replaced and I can not think of anything else where fuel and coolant come together.
Any ideas?

Had similar symptoms in a td5, fuel cooler replaced, all hoses replaced, still had diesel getting into coolant. Problem was in the head, new head, new hoses (again), and problem solved. Big bill. Unhappy me. Hope you don't suffer similar fate.