I recently purchased a 1992 Seaswirl 185 SE bowrider. I'm in the process of cleaning it up and getting it ready for this summer. I just aquired a 150 hp. Merc outboard that runs very well. The boat has an internal gas tank. If it's been sitting for a few years (5) I've been told, I'm wondering what kind of material the tank is made of? Would it be metal or plastic? and should I flush it out somehow before filling with gas? Thanks!
