I need to replace some rotted under-body lines. I'd like to use something easier to bend than old-school steel tubing - in particular, AGS' Nicopp. At that link, the blurb for Nicopp line doesn't mention fuel, while the Poly Armour one does. OTOH, this Nicopp page does include fuel.
What makes me wonder is, (a) all 'headline' references to Nicopp (and Poly Armour, for that matter) call it brake line; (b) for something that seems ideal for the application, I'm not finding references to its use it for fuel line. It just feels strange to me.
... And, if it can be used for fuel, can it be used with a compression fitting?
EDIT: re compression fittings, I was wondering if the softer tubing might somehow not properly support the compression ring; and, also, if the O.D. of the Nicopp might be different than that of steel, such that it could still work in a flared fitting, but again not support the compression.