The $500 compressor are typically rebuilt OE units which are still r12 units. I don't see the point when you can get one designed for r134 for a fraction of the price..assuming you can mount it. FYI virtually ALL e30 compressors came with seals that were r134 compatible. I have a service bulletin somewhere spelling them out and it's probably posted earlier in this thread. Point being the seals are not the main issue but rather the pressure rating. Beyond that you need a new expansion valve and should upgrade the hoses since they will leak more and more over time.
I'd jump the resistor and everything else is optional
I'd jump the resistor and everything else is optional
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