Did a little recherche on Hychill minus 30 vs 134a it turns out 134a is toxic even the PAG oil is also it has the effect to make acid rain, it turns out all the trash talk about Hychill being a bomb if it explodes was only mentioned because of fear mongrels greedy corporations who created 134a which is also explosive and toxic that's why only licenced people can use it, Hychill is non-toxic and is better performing colder vents than 134a, its also keeps your compressor cooler and doesn't load your car up so its better for fuel economy + HP, they go on and say Hychill to explode you need to have the right air to fuel ratio to ignite so its pretty well safe and better for your cooling system as it doesn't corrode the insides like 134a does that's why they recommend flushing as 134a causes blockages, instead of using 800grams of 134a you only need a 3rd which is 240 grams of hychill which you can buy in a 300g can or a 425g on one site for 35 bucks and do it yourself as no licence is required, they recommend their own oil as its a mineral base non-toxic but say its safe to use with PAG oil, also safe to use in 134a or r12 systems without modification's .
After experiencing both refrigerants now my next service I will go back to hychill minus 30 because its much colder for one and saves your pocket and wont bog down your engine as much and of course wont harm your system like 134a. I went to 134a because I had a leak in my compressor and lost it all but it was nice and cold so cold that I felt it in my bone in my wrist, this 134a takes the edge off but you need to be driving over 80km per hour for almost 30 min before you can feel any major different, I took it back as I thought it wasn't working so they tested it 1 month on and said its fine and tell me its probably something to do with my trans cooler blocking 1/4 air to the condenser, never was a issue with Hychill minus 30. Hope this helps you guys.
