Been there done that a couple/ 3 years now.
Initial results were Great! Surprisingly Cold air on demand, like never before.
Liked it so much that I 'upgraded ' 2 more Saabs I had then.
Note that these were R134 equipped ..Not.. R12 which is a different animal.
A months or so later the charges started leaking out.
I Have NOT been able to stem the leakage.. period.
Tried everything except the wholesale throwing of hard parts at it..which I refuse to do, on a $1500 car.
IMO and it's only an idea/ suspicion is that the Butane, despite being under lower pressure seems to seep out through the fittings/hoses, Where the R134a, despite being at higher pressure, previously never did!
Again: I suspect that the R134A fittings/seals are somehow not effective with the Butane gas.
According to the claims of the Duracool twits; Duracool / Envirosafe/ Redtek/ Butane :-) is a 'larger' molecule !?.
They claim it doesn't leak near as easily.
My experiences suggest the exact opposite.. grrr.
Short answer: Yes it cools v nicely. Only when the charge is Full.
But keeping a full charge is essential and 'at least' a monthly top up will be required for as long as you need the AC to work.
Do what you feel you need to, but go into this with eyes open.
posted by 207.6.24...
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