you can do this use any dry gas I used the key board cleaner because it is
a refrigerant gas ( just not for mobile ..auto ... systems)
what you do is add 3 or 4 cans to the system and check for leaks
this is done first immediately by looking for the big obvious leaks than a
few weeks later by looking closely for oil stains on the front or the
condenser around hoses and at the Schrader Valves oil stains will appear as
darker than the surrounding area areas to be looked at closely are
condenser,
back and front of the compressor ` and the Evaporator Coil ( on my car I
can see the base of it near the gas pedal) .. look for oil leaks/ or stains
when you discover them keep looking .... oh yeah DONT FORGET THE SCHARDER
VALVE ( WHERE THE REFERDGERET GAS GOES IN )
THIS IS A LINK ON THIS PRODUCT AND ITS SAFTEY
_http://householdproducts.nlm.nih.gov/cgi-bin/household/b_
(http://householdproducts.nlm.nih.gov/cgi-bin/household/b)
do you have a leak detector? I found mine at a pawn shop for like 25.00 it
is a snap on model 5500 made by tif and it works on r 12 only.
the gas i used did trigger the leak detector form the small amount or 12
that was in the system ...
go to it ...