I'm sure a lot of people have heard
about the "drop-in" blends and how much better they cool. Just
for everyone's information they don't cool that much better than 134a and
many have R-22 in them which will eat the "o" rings seals out
of the system over time. Also, many compressor manufactures will not warranty a compressor
that is running a blend refrigerant. The final problem with
these blends or any type of new refrigerant is they require their own proprietary
fittings and recycling equipment. Most shops around the country are not
even equipped to handle the very well known 134a not to mention some obscure
blend. Where could you go in Wyoming or Montana to get your a/c serviced
with one of the 6 different blends? This is the problem. Stick with 134a
until they come out with a refrigerant that is not a dukes mixture chemicals.