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08-03-2020, 08:52 PM #1
Replace R1234yf with R134a in automotive AC?
I know you are not suppose to do it but how good or bad will R134a work in a car AC made for R1234yf? Can you simply drop it in or do you need to change oil and flush the system? And yes once again, I know its probalby illegal and I will burst the planet into flames by doing so bla bla....just want to know how it will preform in theory. Would never try it of course.