If you put it in you had better hope it fixes it. Once the stuff is in the system there is no easy way to get it out. It will ruin a reclaimer or even a vacuum pump. I hooked up to a combine system last year that had it in it. It cost me $1200 bucks to get my AC reclaimer repaired. I now have filters in the system that are supposed to catch the stuff.
If I find the stuff in a AC system then I will only repair it by replacing the entire system. I have tried to flush it out with all kinds of solvents and have not found one that will work. They tell me that the stuff reacts with oxygen and that is how it works. If the system goes completely empty and gets oxygen in it it turns into s sticky glue like substance.
I would try to find the leak or just top it off with R-134 every now and then. R-134 is not that high priced.
My 1990 Dodge pickup has a small leak in it. I can't find it. It will hold charge for about 6-8 weeks. So I just add a little and keep driving.