Quote:
Originally Posted by doctorofmotors
I used to run ethanol fuel (E85) back when it was cheap ($1.67 a gallon) and yes it ages rubber hoses quickly, after 3 years they looked 20 years old! steel hard line should outlast your truck- unless you have rust issues, rubber will have to be replaced as you would with radiator hoses. The main drawback to steel is it soaks up heat which leads to vapor lock. One "best of both worlds fix" I've seen done is to cover the hard line with rubber hose (slit lenght wise) to insulate
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I've heard of that idea as well, but never tried it. Vapor lock can defiantly be caused depending on where you route your line. If your steel line is ran near something that gets hot, you can put the rubber hose in just area to act as a heat shield