The tank includes {HEAD ~ a part} connected to {TAIL ~ the oil outlet conduit} and a lower part connected to the oil inlet conduit 
The tank includes { HEAD ~ a part } connected to { TAIL ~ the oil outlet conduit } and a lower part connected to the oil inlet conduit
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH