I was in my missus freebie today and when i got out (passenger) i noticed a pink spec on my trainer so i investigated and found a tiny bit of pinky coloured fluid on a "black pipe,large diameter going to a very large black box". I have cleaned it up with a rag ,the carpet under it shows no sign of previous leaking so i guess its from something prior to our owning.By the way this was all in the passenger footwell of her TD4 Auto 2002 if that helps.Any ideas as to what it could be?