[400TT]

Dimi, I certainly agree, for standard fuel lines, leaching is a big issue. We've found some hose that does it and some that does not. Same goes for braided line. Seems the better quality more expensive hose does not do it.

Seems to all come back to the rubber component in the line and the exact compound used.

As you say all the Teflon lined stuff should fix the problem.

Boats also have the same issue.