2016 3.6R 24,000 miles - I found a puddle about the size of a soft ball under the car one cold morning. I found drips of coolant coming from the plastic pan under the engine. I checked the coolant level and it was basically empty. I added coolant up to the low level and drove it to the dealer. They pressure tested it and instpected the underside of the car with a blue light looking for leaks. Of course they didnt' find anything and said that it was probably over serviced. Fast forward a month and on another cold morning there is more drips. The level is still ok. Looking down from the top side of the engine it's impossible to determine the source of the leak. The plastic under the engine looks like a nightmare to remove and the car is covered with salt and nastyness so ideally I don't remove the plastic myself. Any thoughts?