Neither. Do not put an egg in the radiator, it will just plug up the passages.
The radiator cools the water which then goes to your engine to cool it off, as cool water enters your engine hot water from the engine enters your radiator
Yes but it will cool down
Turn it off. Let it cool off and then see if it has a coolant leak or radiator leak. Don't open the radiator when hot because the hot water will spray out.
a bad termastat
my ml500 does not give enough heat inside
Coolant gets hot. Either there's a radiator leak, or you opened up the cap without letting it cool down.
Open the radiator cap when the engine is cool, check the radiator's fluid level, and add appropriately. NEVER OPEN A RADIATOR CAP WHEN THE ENGINE IS HOT OR OVERHEATING. Check your car's owner's manual for specific details.
Do it when the car is cold if the radiator is hot fluid may be forced out when you take off the cap.
Coolant will expand as it heats - that's the purpose of the coolant recovery tank - to take excess when vehicle is hot and return it to the radiator when vehicle cools
Engine hot - normal Engine cool excessive pressure bad thermostat
The heater has a little radiator in it and it may be enough to cool a engine that is running hot
When a car is hot, keep the car running and add water to the radiator. When a car is cold, you can simply put the water into the radiator.