This video shows what happens to rubber-core, braided steel hose after exposure to today's street gas.
This car was completely rebuilt 6 months ago with a new LS V8 powertrain and all new rubber-core, braided steel AN fuel hose. The vehicle had been sitting for a few months when the owner went to pull it out of the shop--with a big surprise!
Needless to say, he is VERY lucky to have quickly realized he had a 'fuel sprinkler' system under his hood! This is how rubber-core AN hose fails with today's fuels--it starts to weep fuel in the beginning, then quickly turns into a complete 'leaker' hose.
This is why you run conductive-core, PTFE fuel hose--it is built to handle today's fuel.
You can check out www.techafx.com for good looking, easy to install BlackWrap or Braided Stainless Steel PTFE AN Hose and their all-black TechAFX aluminum AN fittings--all TechAFX products are Made in the U.S.A.
Ethanol is one of the reasons, but there are other chemicals that are added to street fuel (to promote complete combustion) that destroy rubber hose--that's why all new cars (both gasoline and diesel) come with conductive-core, PTFE hose: it is the only hose that will last with these additives.
This is an issue that is more common than most people know--it just hasn't gotten a lot of exposure.
TechAFXWill 2 months ago