Has any one heard of a product called Duracool. Their products are sold all over Canada with some good comments and none that I could find, bad comments.
A couple of trucking companies that were skeptical tried in one truck then did the fleet.
Their product appears to be a drop in that is compatible with everything.
Called R12a, it can replace R12 and R134a and is 15% more efficient. Is that possible?
A system flush is required before the change over. They claim the best fix for an old R12 system is to add 4oz. of "Duradry" run for 20 min then add a can of "Systemseal"
Here 's the trick. The propellant for these products is good old fashion R12. Their tech didn't want to say too much about the R12 but hinted to the fact.
What do you A/C guys think?
You can talk to them at 1-888-463-2665
I did now I am really confused.

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1984 300SD turbo 126
"My true love"

God made me an atheist and who am I to question His wisdom