Bill, I am a BIG believer in RTV. I don't goop it all over God's creation, but I do use it in nearly every bole that screws into the block, blind holes or open. The reason I do that is because RTV not only seals, but it also keeps bolts from rusting and seizing up. Living in the south where it's really humid, I've seen bolts in blind holes rust slam up. RTV stops that from happening. Some people cry about how "hard" it is to clean up, but that's a lot easier to me than broken bolts.
