-35c is pretty darn cold. Most of us never see that. Southern to mid-Canada does at times. But, I'm surprised that after a 16 hr soak, most all those oils flowed reasonably well. That tells me that if you're commuting in that car. Then when you head back to work 16 hrs later, you're mostly good to go. But having your car "iced" for 2 days....that's a bit touchy. And at -40c it changes considerably more. In any event if you're only -20c to -25c....probably good to go on all those oils within 24 hrs.
In the 70's and 80's my car never saw temps under -22c. And I never saw my 10w-40 oils not flow. Had I lived in the far north, I'd have a picked an oil that flowed out of the can at -35c.....just common sense.
