"Sweating" around coolant/oil caps

[derfo]

Does the underside of your boot lid (rear trunk) where the caps are have condensation on it? Mine does Im in the UK, and especially in cold weather, What happens is, the heat from both caps, when it hits the trunk lid in cold weather especially, will condensate right away and drip down. Mine is like that most of the time here. I have had my car nearly two years no loss of coolant at all. I just keep mopping the condensation up.

[sb01box]

I think the plate just below the two caps can be lifted up to expose the coolant pressure relief value. the valve may have hickuped or can no longer hold pressure.

[srad34]

Originally Posted by derfo

Does the underside of your boot lid (rear trunk) where the caps are have condensation on it? Mine does Im in the UK, and especially in cold weather, What happens is, the heat from both caps, when it hits the trunk lid in cold weather especially, will condensate right away and drip down. Mine is like that most of the time here. I have had my car nearly two years no loss of coolant at all. I just keep mopping the condensation up.

This^^^. It just looks like its sweating. heat and moisture and not able to breath = condensation. Job done. (Incidentally mine in the UK is also the same)