It would greatly depend on your climate but a couple hours should do it.
No , when the engine is cool
To cool the engine of the car.
your heater will be cold, or your engine can over heat. your car can take a long time to heat up. Your inside heater will be cool, or your engine temp. will over heat.
It has over 10,000 parts!
sitting with your car on at an idle is bad over time...the motor starts to overheat because no cold air is coming in and the engine will use all the engine coolant trying to cool itself.. turn your car off if you are stopped for a long period!!!
( NO ) with the engine cool
you can run a car with no air filter but not for to long otherwise the engine will suck in all the dust witch will harm the engine.
The best way to cool down an overheated car engine is to park the vehicle. Allowing the engine to cool down naturally avoids all potential hazards and it is also safer for the engine. If you must start the cooling process immediately, pour cool water over the radiator and upper and lower hoses.
You don't need to keep your engine cool, Your car has a radiator system that will pump water/coolant to keep your engine cool. If you're engine is overheating, have someone who knows what they are looking for pinpoint the cause of the problem.
In the coolant reservoir when the engine is cool.
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
to cool the coolant in the engine