I used CuNi tubing when I replaced the rubber hoses on my bypass oil filter. There are enough bends in the tubing that IMHO, a loop is not needed.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum