I was cleaning the '52 out today and noticed on the passenger side near the gas tank in the cab there is a thing that looks like the lower two inches of a modern oil filter. It has a pipe about 1/2" sticking out of the other end and it disappears behind/beneath the gas tank. Does anyone know what this is?


1954 Chevy custom 261CID, T-5 5 Speed.
1952 Chevy 6400 2 ton hydraulic flat bed.