Antifreeze Condensation on Deck lid

[Lew]

I changed my oil this past weekend, and when in the trunk this AM just to check the oil level again, I noticed there was some condensation of Antifreeze on the trunks lid. It was in the pattern of the rubber gasket around the holding tank. I checked to make sure the coolant cap was tight, and it was. When looking under the plastic cover that hides the relief valve, I noticed a very small antifreeze residue around the lower part of the valve. That area was not wet with antifreeze. I was able to snug up all the bolts around the valve approx. a 1/4 turn. Not sure but maybe a new coolant cap is needed.