Hi folks, I was hoping to find a definitive answer on what will DEFINATELY work as a replacement to the R12 in my '93 Eunos roadster/ Miata/ MX5 1.6. I had it charged by Refrigeration services in Lisburn last night with R413a (not R134a!) and the system made it down to 10 Deg 'C, with my compressor squealing, then I drove round the block to see if fresh air would help the condensor cope with the oddly increasing temperature in the cabin only to get MORE squealing and upon returning to the yard I was greeted by the melted clutch on my compressor adorning the underside of my bonnet

So, what I'm really wondering is...should I just get this R12 system ripped out altogether or will there be a cost effective way for me to charge the system with a non compressor destroying replacement refrigerant?

Cheers in advance!