hi John, thanks for your answer, I forgot to say that the car is a 52 plate fiesta with the zetec engine. the liquid is definatly oil but is not 'dirty' oil if you know what I mean. It is thin like clutch fluid but as I said all the bottles are full, would this be the kind of oil that is in the gear box? or does the water in the air con unit have any addatives in it to give it a greasy feel?
malcolm
July 2009