Hi all. I just finished a rebuild on a 350 mag mpi. Block was cracked so found a machine shop that had extra 880 blocks. I took them everything to check out and got the new block back bored 30 over. Had them check intake and all the manifolds and risers and they said all looked good. Keep in mind that the engine ran just fine. But the block was cracked on the exterior. Was not even any signs of water in the oil. While out I also installed a freshwater cooling system a mfh-5320. Just put engine back in boat and began filling the heat exchanger. It took over 3 gallons of antifreeze which I thought was odd. I then ran out. So I figured I had enough in to try to turn the engine over. Before I did I checked the oil again and the oil was all of a sudden way high. So I sucked some out and sure enough all that antifreeze went straight into the oil pan. Any idea how this could be happening? Either I or the machine shop missed something dramatic for all that antifreeze to flow right into the oil pan in literally a few minutes. I’m not sure where to start to try to track this down so any advice would be greatly appreciated. Thanks.