my a/c has been unhooked for years. i just tokk apart my compresor and cleand all the oil out. is it good to put r143a into it now? ware can you get the new concetions to fill it up at?
Add in the fact your existing hoses are probably not barrier type hoses so the smaller R-134 molecules will leak out at a much faster rate than the larger R-12 molecules.
If you really want to do a proper R-134 conversion you will need new barrier type hoses