Unless the oil pan is made of human skin wind chill means nothing
Good glow plugs , good compression , good batteries and good starter the reason they start. Anyone see a common word there?
Everything of mine starts easily down to zero except the boat she is missing that one vital element of compression. A gallon of Lucas gives me fake oil pressure so I can sleep at night

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commercial fisherman diesel in my blood in my boats trucks and Dear old Dad has had me drivin them since i got my first license in 1968
1986 300 SDL 427654
1999 Chevy Crew Cab Dually 225423
1986 300 SDL 287000 Dad's
1987 190 Turbo 158000 Mom's (my inheritance)