Okay, so my dad and I are about to replace the A/C Compressor, drier, and expansion valve, so I started looking into refrigerants we could charge it with when we're through. This car has been converted to R-134A, and before anyone says anything, we have no plans to convert back. R-12 is simply too expensive, plus we use R-134A in the other three cars.
That said, I was wondering about using Duracool or Freeze-12. Does anyone have a measured and checked temperature at the vents for either of these?
Would they work in the system as it was converted? My understanding is that the conversion would involve new hoses and fittings that would be basically the same but would hold the smaller particles of R-134A, as well as a new expansion valve.

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1984 300DT turbo 138k mi

Still hauling me to school and back.

Handy Site:
http://www.dieselgiant.com/