[QUOTE=TheDon;1241384]
Quote:
Originally Posted by Old300D
25 year old fuel lines will leak, and more so with biodiesel use. They should be replaced anyway, so if you plan to use biodiesel, use Viton lines. /QUOTE]
you can use stock lines, they are supposed to be changed every 3-4 years IIRC ..gives you the initiative to stick your head into the engine to change the fuel lines every 3 years if you run bio...
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Unfortunately the lines degrade and plug the filter, which can get expensive. I regularly plug my primary filter with rubber from the "cigar hose". I have a clear glass filter with cheap replaceable elements, but I need to replace that last piece of rubber.
But new lines may deal better with bio -- I've not heard any reports from drivers using new factory replacement hose with B100.