The last method I saw, is the one I used and I am going to present here, it is a special repair kit based on silicone and a "suction cup" for pulling the metal.
This kit looks like this:
The place of dent needs to be clean using a piece of cloth and the solution that comes with this kit, probably a light solvent.
The fuel tank looks like this after cleaning:
After applying the melted silicone we will gently press the "suction cup" for 15 seconds, according to the usage guide. Reading the usage guide is important in order to be effective.
After 15 seconds, the "suction cup" will stick to silicone, and silicone will stick to the paint on the fuel tank:
After waiting for 5 minutes, you can check after 2-3 minutes if the silicone is cooled and hard enough
with your fingers, we will have a strong adherence between the paint, silicone and "suction cup".
We can now install the lever we will use to apply the pulling force:
At some moment the metal sheet will come to position and we can hear a small pop, knowing that we are almost done.
The "suction cup" can be removed by using the cleaning liquid and the tank is coming to its original shape:
In the end, after cleaning the tank, it looks like this:
- Read carefully the usage instructions, for safety details and to use the parts effectively;
- It is important to have a power plug to use with the silicone gun and hair dryer;
- Several repeats may be necessary, in my case 4, I used also the small "suction cup" for better results;
- It is good to try to repair it as soon as possible, in order to benefit of the metal "memory", for better results;
- In case of hard dents or areas with paint cracks or chips, this kit might not be effective enough and side effects like paint removal might appear.
Good luck!
Or better, no need for such repairs ;-)!