Citroen XM Forum

Hi Addo,
Your knowledge of chemistry is obviously better than mine! I'm happy to send you a sample of the goo (I have about 0.5L of it) if you'd like to investigate further. Let me know here, or by e-mail or PM.
Chris

I'm happy to say that after another 300 miles of motorway driving the coolant is still bright green/yellow. I can't see the point in just draining and filling without at least a quick flush through. If you 'damage' the cooling system you can write off the engine.

Steve.