Found this pic doing a search. Looks like some sort of oil line.
Attachments
0FCB36BA-492E-4888-A55C-0CFD03C2E5B1.jpeg (218.84 KB, 196 downloads)


Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod