I somewhat recently upgraded my rig with various enhancements including adding a F. A. S. S. system. I am very happy with the system but am concerned that the new "rubber" fuel line will degrade over time with the use of the B100 that I am now running. My installer tells me he spoke with the folks from F. A. S. S. and said there would be no problem, but I need a little additional verification. Does anyone have any guidance on this for me? Is the fuel line really rubber, or is it viton or something else *like* rubber that will not degrade over time. Biodiesel eats rubber like crazy and I don't want to have that eroded stuff, now PAST the filter, running into my injection pump and injectors, etc. Help! Thanks a bunch in advance.