[Russian winter]

Yes, the starter turns slowly because of a cold

Some motorists establish electric heaters of a cooling liquid. Warm the engine from above and from below. But it in places where in the winter very coldly -50,-60 °F (-40,-50°C)

Do you normally warm the oil before starting?

No

In photos my engine

[Russian winter]

Engine start in -31 °F (-35 °C)

9 hours without warming up.

Car: Toyota Funcargo (right wheel) 2001, 1300, oil 5w30 full synt.