This is one of the best automotive sealants I've ever used .After I put it to the test on my car fillers, I found that it created a super tight, durable seal that has held up against all kinds of rough driving conditions. Plus, its really easy to apply and doesn't have any weird, chemically smells like some other sealants out there. The only downside is that it's a bit on the pricey side, but to be honest, the quality is definitely worth it..See full review