1876 July 162/3 If..the pressure should not prove sufficient..pumps, similar to those used on the oil lines, shall be placed at intervals along the 35 miles.
1943 19 May 3/5 An oil line known as the ‘Big Inch’, which was laid from Texas oilfields to Illinois..was broken to-day.
1986 T. Clancy (1988) xxxii. 538 An oil line let go on number-three diesel generator. Yard goof, wasn't welded right.