Just crank it up when it's 95 degrees and muggy WITH NO ENGINE COOLING FAN. I've got about 1.5 weeks on the new electric fans and today a connection to a relay decided to give it up. So the condensor had no air flow as I sat in the drive-through line on lunch today. The high temps got the high side pressure up enough to vent the refrigerant out of the pressure relief valve. I thought I had smoke coming out from under the hood! When I looked I realized that it was the gas and saw the oil on the back of the compressor. Then the engine temp was getting up there, but when I stopped again, I pulled the connector off the relay, plugged it back in and both fans started up again. It's time to find some more reliable relays. I will also rewire the system so that the compressor can not engage unless there is voltage to the fans and look for a high side cutout switch. A lot of cars come with those. Oh well, I was thinking of changing my orifice tube out anyway.