Many moons ago, like about 25 years worth, whilst looking to rebuild a faulty Car A/C, I was impressed by what was then called ER12, a much better drop in for the old R12 refrigerent gas which most cars used. Refrigerent 12 or R12 or Freon were Du Pont companies product and patented worldwide.
At the time R134a had been introduced to remove R12 for enviromental reasons, in Europe the virtues of ER12 were exaulted, but was not a DuPont product so was given bad press and I believe banned in the US since it is made from Butane and Pentane. (NSW followed suit like a lap dog).
Now R134a is going the same way - it too is no good for the world. My 90 is giving troubles with it's A/C, now because 90's used the newer barrier hoses, its easy to change the ports, and thus change to R134a.
But some research shows:
1. The NSW ban on ER12 was been rescinded.
2. The cost of R134a is ridiculous.
3. You need a license for R134a - (ummm - but I still have a contact.)
But:
1. A new type of ER12 called Hychill 30 made in Oz is now available.
2. No license required, since its virtually BBQ gas.
3. They have a suitable Oil and Solvent flush to suit
4. Much cheaper.
5. I can get it from Bursons.
6. You use less (30% less).
7. Operates at lower pressures, temperatures, reduced load on compressor, engine, hoses, condensor etc
So why upgrade to R134a which you know is being phased out, and Hychill 30 is better all round. Good question.
Well very soon I'll find out, I'll try to get some Monday. Then the fun will begin.
(I knew that set of compound A/C gauges and manifold would come in handy)
Now all I have to do is find the Vacuum pump.
