Why Do R134A Systems Leak So Frequently?

[alex_at]

any take on products like this: https://www.errecom.com/en/cool-shot-ultra/

Errecom cool shot ultra ?

Should help against fouling - apparently an issue in stationery ac systems.

Any ideas on use, effectiveness?

 

[PandaBear]

I have 3 R134a vehicles, 2 leaked only because of pipe burst and collision damage about 10 years into ownership, 1 never did when we trade it in.