Good Day All! We had occasion to camp last weekend, so I flipped all the valves. Added fresh water & went camping in 5C weather! Back home again with slightly better temperatures. The 4' hose which is tee'd into the water pump has a crimped female end that will not fit into the Antifreeze jug. Any thoughts on what this end is, that I might buy a Male fitting to barb another hose into the jug for antifreeze draw? The Male plug in use has a rubber seal on its nose, so it is not pipe thread. Thanks in advance! Dale