I got a used one from the junk yard (no telling how long it will last but is has really good compression)
My questions:
Do I really need a new dryer? (& what is its purpose?)
We had been told years ago it was dieing, but just would deal
with it when it happened
It is almost locked up - almost there - frosted the belt - something inside probably went
Freon probably wasn't low because it was recharged two years ago - I really don't think it has a leak
What do I need to convert to R134?
Can't I just reuse the freon I have? If I can't - why not?
Not only did this thing happen, my truck refused to start once I got it home

It has been one hell of a day. My battery cable was really corroded & won't give good contact anymore. Grrr....