I believe you have the "dripless" seal (starting in 2007 models?). I put dripless in quotes because the design uses a tap of off the cooling system to pressurize the seal area with water which then leaks -or drips- out of the boat. As opposed to the conventional method of allowing a little bit of lake water to drip through the seal into the boat. So "dripless" really just means it doesn't leak into the boat. So, the warm water makes sense because it's coming off of the cooling system - but you should be dry on the inside the boat. I think you are due up for a little service.
2007 Mobius LSV
1989 Sanger Skier DX - sold