From Soaring over on Mustang V8 Forhttp://www.mustangv8.com/forum/classic-mustang-technical-forum/wrenchin-tip-fuel-line-threads-4242010/new/?topicseen#new
I replaced all the fuel lines and brake lines on my 65 a few years ago, and I used this flaring tool and the thread seal that comes in a tube. I have never had a leak, and I have never used the teflon tape. You don’t need a real expensive flaring tool to work on these old Mustangs.
Flaring Tool
Soaring’s ride:
1965 Mustang
