Lately I've been doing a lot of work on my car. And I'm at the point now where things are finally coming together and after cleaning up the inside (the floor mats particuarly) I am reminded of some sort of leakage coming through under the clutch pedel down the carpet and on to my floor mat. I can't tell what it is, it doesn't smell like anti-freeze, but I could be wrong. Either way it's eating away at the floor mat and anything leaking is not good. I've already had the heater valve replaced when I first got the car and this dreadful thought that the heater core is leaking is in the back of my mind. Any idea what could be going on?