I purchased my great MB a year ago. I know when I turn the air conditioning on, it feels pretty cool, not cold on the feet.
I want to get my refrigerant checked. It does not seem to have a leak.

I am hearing different things on having R-12 added to the R-12 that is in the system, or having HVAC guy remove R-12 and refill with the new 134?

I heard if possible stick with the R-12 when I can find some. Others say the newer refrigerant is good.

Please give me feedback on experience.

TC