Hi Lorne Apologies for getting your name wrong. I first used the yellow tape a number of years ago when constructing my compressed air system. As I'm sure you know for gas especially at pressure the white stuff just doesn't cut it. As you say the yellow tape is thicker and probably due to my ham-fistedness I just find it easier to use hence using it for plumbing. You are correct about using a needle to remove the old stuff, that's exactly what I do. Its just the thought of trying to do that without the ability to see what you are doing due to restricted access. Anyway Hey-ho if what I do fails I may end up using the tape after all. As always many thanks for your replies I value your inputs. Regards Tony
Absolutely no problem on the name, Zack! And thank you for your courteous reply..[do you have Canadian DNA?
] I have never tried these tapes on a "gas" fitting (I am assuming you mean "gas" in the correct sense and not petrol). But my petrol lines, since my 2002 trad mishap, are all not tapered now. I use AN fittings and SS PTFE (incapable of melting/burning) or detaching.
My wife disliked having her headgear.crisped. 
As you will likely agree, professional mechanics (necessarily time-sensitive and cost competitive) and car manufacturers/designers (mass production cost-sensitive) have different priorities and methods than amateurs do. Amateurs have the time to be safer and cover their lack of skill and buying for one car only is less onerous than buying for a 1000 a year. Reservations about amateur work are unwarranted, assuming they are monitored by others.
I feel the same about your inputs. A collegiate format is safest in a public forum and that requires reactive dialogue so TY
Lorne
