Geez, Tro, youre pretty good at this troubleshooting! Good going! Oh, just called Jr In S Cal, and the manual says 0.7-0.8Kg R12 factory, if you need to reference that at all.
Also, glad your r134a keeps your car cool, as thats a surprise. Also, the 80% rule is as accurate as any other method. There is no established reference on how much r134a to install in an r12 engineered system, to my knowledge, so that figure may have been "passed along" like so many other "rules" to go by on such matters. But, bottom line, I respect your situation, and hey, it works for you, thats all that maters.
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