The PTFE (Teflon) lines and fittings are the best lines for pump gas. I have read a lot of stuff on line and it seems like some fuel blends in certain areas cause some (I believe its all lines but hose manufacturers don't tell you this to make you spend money over and over again) braided lines to weep fuel. If you want to spend money once get PTFE. It is not cheap as just what is seen below cost $1100. There is also a lot of mis information out there and I will be happy to answer any questions. I will update this post with pics once I have the black braided yellow caps changed out with the black ones.