Reading this thread, I realize how lucky I am. It has been quite cold in Tulsa OK this past week, but not as cold as what many of you experience. Fortunately, my unheated garage is super insulated so never drops below 60 degrees, even when temps around here are in single digits. So long as the cars are not too dirty, I do rinseless using ONR in warm water. I use the method of letting 20 or so microfiber towels, folded in quarters, soak in the solution then use each folded quarter of the towel for a washing pass. A heat wave is expected in Tulsa this coming weekend (mid 50s to the 60s). I'll finally get to do a complete detail on our 2015 Outback. Going to be a fun weekend coming up.