I've been looking on the web, and the claims for Hydrocarbon Refrigerants are too good to be true. Better cooling than R-12, compatible with existing hoses, lubricants and components, enviro-friendly and no license required.

I see you guys are gung-ho on R-12, but any advice on these refrigerants ?

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Michael H
1986 300D W124 5-spd manual 250k miles