Quote:
Originally Posted by wolf k
I always wondered why the use of the secondary twist cap, surely the original Lemans cap did not have this. Why not reproduce the original style?
My 69 Mach 1 had a factory flip top gas cap, no secondary cap. There was a spring loaded seal that sat against the filler neck when locking the flip top down.
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Safety and liability. Ford replaced the Mustangs "flip-open" caps 15 years ago with a replacement unit with a conventional type cap hidden by the flip door. And that's for cars from 1970! They stopped supplying the original factory type caps as service replacement parts because of liability concerns.