Hello to everybody and a very happy new year it has been long since I was here.

I have a small fridge in one of my animal sheds which is used for keeping animal medicine and vaccinations inside it. It is a normal very small fridge which has a small ice cupboard at the top. The fridge leaked it's gas about 3 years ago so I fitted a valve and put in more gas. It worked for a few months then needed more gas. Then it was empty again a third time so I put in some fluoresent dye and more gas so I can find the leak and fix it fully.
The problem is that it has now stopped leaking for over one year. Can the yellow dye have fixed the leak? I can't see any yellow stains anywhere on the pipes or weldings or anywhere inside the fridge. I am not sorry it is fixed but I would just like to know the answer for myself
The fridge is using R12 gas and the compressor is 1/12th HP. I'm not sure how old it is but I have it for about 15 years but I bought it already used.

Thank you for your answers.