on my 1951 235 the line that comes up to oil the lifter a very small line has acompresion fitting that attaches to a tube goes thru the oiler and then curves down. The tube is loose can pick the top portion out looks like it was soldered in place at one time also loose by the compresion fitting,Sorry i can't be more spcific but doesn'nt seen rite any suggestion. Should that tube be replaced and whats it called? Thanks Bob