Got myself this gunk because my exhaust was leaking at one point I wanted to take any major repair on me and this "miracle cure" test times. However, I am disappointed it clearly.
And ... it hardens very slowly and only the body must be good to be painted, that it has an effect .. best leave this car for 2 days only stand and not go off !!! However, it has not always to have the opportunity to park the car for 2 days ... before a major shortcoming ... then also even just adds a big disadvantage namely when the ground is hard, the body should not move, otherwise the whole place breaks again and it's leaking again.
I would not pick it because it is an insane mess to handle it!
Greeting Nik
