Upstate New York rarely sees days temperature above 90 degrees. We have had 4 days in a row above 95 so I took the Saeco lube-sizer outdoors to see if the lube would flow without the heater to soften it up. It did so without a problem except fpr one thing. ME! This 70 year old can't stand in that kind of heat. I have heard of others doing this and I have to give you a tip o' the hat. To much for me.