[Pauwl]

How do I know if the conversion from R12 has been done?

Last time my system was filled, it was empty a few days later.
The radiator looked terrible, so got a new one to put in.

Before I fill it up again (and it's the seals elsewhere), how can I check if the conversion has been done or not? I presume without conversion it would just leak out again?

any ideas?

thanks,