18 months ago I had the AC system gone completely through - and
converted to R134a. It got new seals and the whole nine yards. the
system ran great through the hottest months but then began to show signs
of 134a leakage by virtue of reduced cooling. That got progressively
worse. Twice I added refrigerant, but the cooling has once again dropped
off.

Givben this - obviously I have a leak.  I was wondering about the
application of one of those sealers to the refrigerant? Do they really
work??

I dropped a bundle to get this fixed, and would hate to have to do it
again.!!

Recommendations?

Thanks,

John Rodgers
Birmingham, AL