Originally Posted by
DazC
Are you sure it's not a slight heater matrix leak? Antifreeze won't be removed by the aircon as easily as moisture will and will leave an oily film on the screen.
Maybe but I'm not seeing a drop in coolant level?
There's no smell of anti freeze or water in the car.
The other week I did a 200 mile run in it, parked it up for the day fine in the am, come back to if 5-6 hours later with the front windows fogged/ hazed up.