We have been doing research and testing on that.  The Continental hose is
good for liquid gas with ethanol.  The flennor multi fuel lined hose is
good for gas/ethanol fumes for the gas tank vent kit.

Ken Wilford at vanagain.com

On Aug 19, 2017 11:29 AM, "Jim Arnott" <jrasite@eoni.com> wrote:

> Another thing to consider is the reformulation of the fuel we use.  It
> used to be gasoline.  Not so much anymore.  Ethanol is what trashes the
> original “rubber” lines I’m told.
>
> Jim
>
> > On Aug 18, 2017, at 9:45 AM, Stuart MacMillan <stuartmacm@GMAIL.COM>
> wrote:
> >
> > They are better quality, and another thing is that ozone and NOx levels
> in big city air was much higher in the '80s than it is today, both of which
> attacked rubber.  I don't expect to replace these seals again in my
> lifetime, but I'm old.  Still, I'd expect these to last at least another 30
> years if not longer, since they are not exposed to UV, and modern synthetic
> rubber (EPDM) is very stable and long lasting. It's even used as roofing on
> flat roofs and has a 50 year warranty in that application.
> >
> > Stuart
>