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Wow, that’s one dirty evaporator!
As I stated, I took my entire system out of the car, and apart. Everything.
And all of it is replaced with brand new, including all new barrier hoses, expansion valve, compressor, receiver/dryer, with the exception of the evaporator (which looks like new, still very clean), and a couple feet of hard lines.
The evaporator and hard lines I flushed until they ran clean.
So, it is essentially an all new, fully disassembled and reassembled clean system.
It’s held 29.x pounds of vacuum for days now, so I think here’s no leaks.
I’ve mulled it over and I think I’ll stick with my original plan of R134a, which is what it is set up for.
With the new, modern PF condenser I think (hope!) I should be able to get low 40s vent temps in 90 degree weather.
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