I do think mine is somehow trans fluid related as it is a rather pungent smell. Not a hot/sweet smell like engine coolant. If yours smell like hot coolant, check the lines under the intake manifold. I did a timing belt job on a friend’s S6 once upon a time and when we were done […]

Mine just smells hot since i changed the thermostat back to the original temp. Am waiting to see if it goes away after awhile. If you find a sneaky drip, let us know where it is so we can look too.