I have repaired with the kit a complete tear through the manifold. I have applied the paste, the clamp mounted and let the whole thing to harden for about 2 hours in the sun. More time, I had not until the next trip. I then carefully and driven with little speed and pressure. Meanwhile I drove 1000 km with it and it's still tight! A very good, cheap and easy solution! I can only recommend! When the stops at the elbow, so at the hottest point of the exhaust system, it holds everywhere!