It took about 5 years but my tank started leaking last summer. I was going to order a new one but my dealer said he could fix the old one. He said he has a machine that "welds" plastic. I went that route and it has held so far. I was trying to figure out why the tank cracked. The only thing I noticed was that my tank was building pressure between fill ups. Maybe the expansion and contraction caused the tank to fail? I checked the vent in the cap and it seemed ok but the tank was still building pressure. I experimented with not tightening the cap down as much as before and this seems to have solved the pressure building up. We'll see if "weld" holds up. Have any of you noticed the pressure escaping when removing the fuel cap?