-35 over night temps in Prior Lake, MN during polar vortex.
2017 Ford Explorer 3.5 v6 sat outside all night NOT plugged in. Remote started it. It started within 3 seconds. Wasn't happy, but started lol. Was quite impressed.
Oil: Amsoil OE 5w20 w/1 can of 2009 mos2 liqui moly
Fuel: 88 octane w/15mil of Archoil AR6200
Many vehicles in my neighborhood did not start, oil was just too frozen, too thick or battery not enough juice.
My 2014 F-150 3.7 v6 work truck with Motorcraft 5w20, frozen block, would NOT start, with a full charged new battery. Oil too thick.
2007 6.0 powerstroke plugged in, fired right up with Delo 400 LE 5w30..w/archoil ar6200 in diesel fuel. But my power steering was a different story, sounded like it was going to EXPLODE