I have some questions around the water seal for the engine compartment. The first is the cowl cover seam, where I have read many times that it may leak and cause corrosion in the spark plug coils. But last time when I removed the cowl covers I found that there is a piece of foam sandwiched between a pair of pretty tall walls at the ends of the two plastic cowl cover pieces. It wasn't obvious how to apply additional sealant along the seam. Here are some pictures: Looking from above: Close up: Looking from below (hard to hold the camera): Close up: Is this piece of foam enough to stop the water? Is it an improvement over earlier years, or, does earlier year cars have this foam in between the two cowl pieces? Look at the last picture. If water would come out of the seam, wouldn't it be even easier to come out of the two slots where the plastic cowl cover pieces latch onto the metal cowl tray? At any rate do I need to apply silicone along the seam somehow? The funny geometry would make it ugly though. The second question is about the seal between the hood and the cowl cover. There is a rubber weather strip on the cowl cover and there is a matching foam strip on the underside of the hood, but the foam is shorter than the rubber. In this picture we can see clearly that it seems there is a piece of foam missing on the right hand side: Close up pictures show water get on the rubber (and maybe over into the engine compartment?) where there is no foam: Same on the other side: Why is the foam shorter? Cost saving? Fuse box doesn't mind water splash on it? Is it OK to add some foam myself? I want to make sure I won't block some intended gaps. Thanks!