Look what I just scored on Craigslist? $20 for a kit: 2 cans of ES12A ,1 can dye charge, 1 can stop leak , charge hose, fittings, labels.
I have to flush the system, install the R4 compressor from my 240D parts car, install new receiver dryer, pressure test and charge if it tests good.
Who is running ES12A? Please respond to the following questions:
1. How long have you been running it?
2. What is your temps? Ambient and vent
3. Has performance (vent temps) remained the same since you converted to ES12A or has it slowly degraded?