A radiologist is a physician or medical specialist trained in obtaining and interpreting medical images. Images may be obtained with x-rays, (CT scans or radiographs), nuclear medicine (involving radioactive substances, magnetism (MRI), or ultrasound.
Without radiator coolant, an auto engine would overheat extremely fast, leading to mechanical breakdown and engine failure. While oil may be the lifeblood of a carâs engine, coolant is like the water that helps to dispel heat. In fact, coolant mixes with water in a carâs radiator. It prevents the water from freezing and boiling given the extreme temperatures it is exposed to.
The core is basically a small radiator. Most older cars used a heater valve to shut off the flow of hot coolant when heat was not desired. Most modern era cars circulate hot coolant all the time and airflow is diverted by small doors in the A/C/heater ductwork. There was a gasoline fueled heater option for the old air cooled VW buses.