FYI

There are at least 2, possibly more, highly trained and qualified A/C professionals who spend a great deal of time here.

I'm pretty sure that they have made their perspective on hydrocarbon refrigerants in autos known.

So what I am sharing is for accuracy and clarity. I'm not encouraging folks to use HC auto refrigerants.

The procedure the OP used for es-12a has a couple of errors that I could see without going in to it in great detail. Also some of the statements he said are different than what the trained A/C folks I know who have used es-12a recommend.

So, IF you are going to do this kind of stuff, don't follow his procedure.

'nuff said.