Cheap-o Canadian refrigerant is a mix of propane/butane made by a few companies.
R12, or R134a is illegal here, car dealers may have it, but they charge $150 for a recharge and they won't tell you what they put in the system. A car can be brought into Canada with R12 or R134a, but once it leaks out, you can not legally top it off in Canada.
For the time being I will run the propane/butane mix, just to make sure the system works. Other than being flammable, it works quite well and our government didn't ban it yet.

xp

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1985 190E 2.3L - a constant project.