So I've been looking for something softer than steel for fuel line. I've been looking at 3/8" NiCopp (10% nickel, 90% copper) at the auto stores and online and it's working out to to just under $5 a linear foot. That's some expensive shit! I happened to be in Lowe's plumbing isle for some home improvement supplies and I saw 3/8" cooper line that was about $1.30 a linear foot. I've seen copper for fuel lines before and thought it looked great. Is this just the regular home improvement copper. Is there any issues with today's fuel running through 100% copper?