On Tue, 1 Mar 2011 17:37:10 -0800 (PST), Frogwatch
wrote:

On Mar 1, 7:59*pm, L G wrote:
Google results show differing opinions. *Has anyone used Teflon tape
without success on a fuel line thread?

TIA,
Larry

GreaT question. I have always thought teflon tape was impervious to
everything.

It's not, diesel mechanics never use teflon tape for anything because
small pieces of it can break off and clog injectors. They use lliquid
sealants like Permatex or Loctite instead.