R12 to R134a worth it?

Smokedya said
My compressor nuked and now I have to replace my o rings and everything else in the system to clean it. I was thinking I might as well change the R12 to R134a but I heard that the R134a just doesn't work as good in the older cars as the setup is for R12. I was curious if it is worth it and what should the temperature be at?

If you can find "Freeze 12",nicely works.You need to that flush that system ( I would it twice,keep receipt's & all . They will ask for warranty,nowadays: An installed (by a shop),a new receiver/dryer,a new orifice tube, and a complete flushing.
Personally, freeze 12 does this correctly. Take your chances....