Possibally stuck lifters?
If clicking while trying to start then might be a bad starter. If clicking while running, then might be valve/lifter noise.
clogged thermostat
only in very extreme cold temperatures. like -40
It is thinner when warmer, and thicker when colder.
If it does it when you turn the key and the engine does not turn over, it is a weak battery or possibly a loose connection on the cables.
Her luggage was so big and bulky it wasn't functional.
Unless you're running in extreme temperatures there's no danger from using that oil.
Lack of anti-freeze in sub-freezing temperatures. The water in the block freezes and expands.
Engine blocks can crack from many different reasons. Improper antifreeze ratio during freezing temperatures, internal engine component malfunctions (such as throwing a rod), etc.
The fuel injectors make the ticking noise you hear at startup, especially when the engine is cold (colder temperatures).
The battery is in the rear compartment with the spare tire.Its placed there to protect it from extreme temperatures in the engine compartment.Should make the battery last longer.
The main purpose for wanting a car engine warm is for lubrication. Also on older engines, the colder air causes an undesireable fuel air mixture coming in the engine.You could use the engine cold, but it causes undue wear to the engine. The enging will last longer if it is always given a bit of time to warm up, the time will be based off outside temperatures. An engine was designed to operate in those extremely hot, near combustion temperatures.