[Shop-talk] trucks a/c

[Tim]

I have a 96 S10 with about 171k miles on the 4.6 litre Vortec V6 (a great motor IMO). I haven't had to do much to it beyond basic repairs with the exception of a/c work. Because I can't handle the heat, I had to basically get the a/c system rebuilt/replaced a few years ago. After being taken to the cleaners by the first shop, I have now had it looked at by a shop where we know each other and I trust them. A couple days ago I was told the system is charged, pressurized and not leaking. And it was cooling down to 68 degrees; not too bad a temp but when the truck was "younger", the a/c used to get so cold as to almost be painful (I say almost as I love the cold and where shorts year 'round here in southern WI).

Here is my question: Is there anything that can be done to get the system to be colder? Or am I SOL because of the newer freon being used? (The guy at the shop basically said there was nothing else they can do and didn't charge me for the check up; which is a nice thing.) I plan on cleaning out around and in between the two radiators this weekend. Hopefully this will help. 

TIA for any suggestions

Tim
Dairyland Datsuns