Pipe dope or Teflon tape on fuel fittings?

I am not a fan of Teflon tape in any variety. It gets semi-dissolved by fuel oil and diesel. Professionals I encounter #2, #4 fuel a good bit. Most mfg of fuel valves, pumps, etc, will void a warranty if there’s evidence of Teflon. Locally, it was against gas code here. As stated above, the best practice is to be one thread back from the end. Lots of folks forget that. All that said, the real problem is the second time you assemble it. The bits left in the female fitting get pushed in to the fuel pump, carb, etc.