yes the water heat was hooked up but never had any issues like that,,the cooling system was clean, the intake doesn't connect any oil passages or water jackets through the block, the head gasket could completly fail and nothing can get to the water passage on the intake,, the only thing that could trade is water and fuel, when it was hooked up, it could of leaked fuel into the antifreeze or blown antifreeze into the intake which ever was stronger,,
