The water pump sucks lake(or sea) water up into the special exhaust manifold which cools the manifold and heats water...thermostat decides recirc, or pull more water form the manifold...dumps back to sea, along with the exhaust.Pathfinder did 2.4 6 clys too.
Why is it that none of us driving the old beater VWs are the "rich Brother"? Something amiss there.
pretty insane we dump exhaust into our water.