You should not drive a car that is running hot,because you can lock up the engine.
yes
there is something wrong with your car. It's not supposed to run and its not supposed to be hot at the same time. Maybe its running for a fashion contest
There are many reasons as to why a Sunfire may be running hot. Most likely the car is running low on coolant, or other fluids.
Your Trailblazer may be running hot because your fan is no longer working. It may also be running hot because your don't have coolant in your car.
YES.
That depends on what the car is supposed to run at.
This is the result of of an internal combustion engine.
No, that will have no effect on the battery.
This is the result of of an internal combustion engine.
Thermostat and radiator
You may get splashed with hot oil and get burned if you add oil with the car running, why don't you just turn the car off and add it??