And don't forget the oil. In really cold Maine winters it will crank over much easier with Syntheic oil, than petro base oil.
I've found that to be true working alot in NH next door in those cold winters. One reason I switched years ago to syntheic oil in crankcase, transmission and rear-end diff.
1989 420SEL 105575 miles
1990 Chevrolet E-Cab C-1500
1989 Olds Toranado Trofeo'