In one form of the invention the exhaust pipe forms a part of the heat exchanger reservoir in which case leak {TAIL ~ preventive adhesive secures} the heat exchanger member to {HEAD ~ the pipe} 
In one form of the invention the exhaust pipe forms a part of the heat exchanger reservoir in which case leak { TAIL ~ preventive adhesive secures } the heat exchanger member to { HEAD ~ the pipe }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD