Fuel line run under the car

[preaction]

Is a rubber type of hose likely braided and rated for the heat and exhaust temps seen under a street driven car does a fuel line need to be PTFE lined to be safe in this application ?

[frnkeore]

It doesn't have to be  PTFE lined (Teflon) but, it should be encased in braided steel, as long as it's compatible with your fuel or a just a steel tube, like factory. Braided Teflon, is lighter and smaller in diameter than the neoprene, braided hose but, also more expensive.

One thing about Teflon, is that if the braid comes in contact with a battery, the Teflon will melt. From first hand experience. The neoprene braided hose, will take a longer time to melt threw.

[GerryP]

Just something else to consider:  I replaced my 5/16 steel line with 3/8 cunifer.  While cunifer is vastly easier than steel to bend, it's still not as easy as running a braided line but it will last forever.

[SSdynosaur]

The alcohol content in today's street fuels is said to drastically shorten the life of neoprene lines without the teflon liner. My experience purchasing fuel lines has been that the teflon lined types are normally less than a twenty percent up charge over the plain, unlined, neoprene. Buy from a reputable source and avoid china imports.

[jayb]

Funny, I have heard the same thing about alcohol content eating rubber fuel lines.  Here in Minnesota we have 10% ethanol fuel, and yet over at least a 10 year period I have not seen any degradation in the braided steel rubber lined fuel hoses on any of my cars.  I did have one car with a section of braided steel hose that did start leaking, but the hose was installed in 1991, and who knows if it was the fuel that caused the problem.  My experience seems to fly in the face of the idea that ethanol eats fuel lines.  I wonder if the manufacturers have made some changes to the composition of the rubber to lessen or eliminate this effect?  For what it's worth, I always buy Aeroquip braided steel lines.

[Drew Pojedinec]

Every day I hear about all the dangers of e10 but have never seen it with my own vehicles.

[Heo]

Son had a -74 Volvo 164, He bought a piece of fuelhose between fuel pump and steel line to tank.
A year later it was so cracked i sucked air in to the fuelpump. The seller of the fuelhose blamed the
Gas this days that just just eat rubberhoses. Son asked why the gas had not eaten the factory rubber
hoses from -74. To wich the seller had no answer but still blamed the fuel

[ArtZarateJr]

I like the PTFE  nylon braided fuel hose from Vibrant. I've had a lot of clients complain their garages wreek of fuel when their cars have sat a week or so. They all had neoprene stainless braided fuel hose.

Switched all of them to PTFE and no vapors can be smelled after months of sitting.

[475fetoploader]

I like the PTFE  nylon braided fuel hose from Vibrant. I've had a lot of clients complain their garages wreek of fuel when their cars have sat a week or so. They all had neoprene stainless braided fuel hose.

Switched all of them to PTFE and no vapors can be smelled after months of sitting.

So, looking at the website for Vibrant Power, are you ordering direct from them, the specific hose you need? Or are you able to purchase their components and cut/assemble as needed?

[Dr Mabuse]

[FWIW] My 1966 Galaxie XL 390 2V came from the factory with (black?) 3/8"  Nylon fuel line, from the sender to the inner fender.

I replaced the OEM rubber fuel line on my 80,000 mile 1976 F-53 chassis Class A Motorhome 3 years ago, with a 25 foot long, 3/8" clear Nylon fuel line.

The rubber line was so dried out and brittle that I could snap in half with my bare hands (it was a disaster, waiting to happen). Safety FIRST!