I've been reading up on R-507(AZ-50) coolant. I was wondering is it possible to run that through the stock Civic A/C system, or would it require extensive modifications. If I would need to modify it, what kind of modifications am I looking at, and how much would you say this coolant would cost me.

I hope we have some cert'd A/C guys in here.....

 

its called refrigerant. coolant is the green stuff you put in your radiator.