You will likely find that you need to remove the emblems to get it really clean in that spot. The factory used a sealer around the emblem and trim holes to keep water out of the trunk. After all these years I find that it has oozed out from under the emblem. I pull them out and clean them up and use new sealer on all the studs. Not sure what the factory used on all of it but I find black and also off white. Most of the white has turned a yellow color by now. I use some stuff called “Premium Elastic Sealant Compound” and come in an off white color. The black sealer is something really close to the 3M Strip Caulk.