I will correct jcyuhns and you by quoting what the EPA states the blend on Freeze 12 is:
80% 134a and 20% 142b

It is just considered a legal and approved replacement blend for
R12 (in the whole country).

Obviously you are misinformed on Freeze 12, and insist that it is Ilegal in 18 states, and flammable. When in reality, it is NOT.
If it was flammable, the EPA would not have approved it.

I agree with you on the points you mention regarding leakage, the lack of proper retrofitting, labeling, etc....

What concerns me is that in your view the EPA is approving "snake oils" for LEGAL replacement of R12.

IMHO it sounds like descrediting the EPA.
We should not wave a flag quoting federal regulations and the EPA on some topics (the topics we agree with them), and when we disagree with them call their ruling a fraud such as "snake-oil".

Many people read and follow your advice (including myself), and look forward to your wealth of information and sound advice (Thank you for it)

Thanks for a healthy debate.

__________________
1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified