In the coolant reservoir when the engine is cool.
All the time
some people have said you should and others have said you dont have to. I myself have never put antifreeze in the during installation in all the years i have worked on cars
50 / 50 mixture of antifreeze and preferably distilled water usually ( Ford says not to have less than 40 % antifreeze and not more than 60 % antifreeze )
As long as the engine didn't overheat you should be O.K.
the antifreeze runs through all your water lines in your car . . . . you put it in your water tank or radiator
Definitely not
Depending on the vehicle it should hold a gallon and a half to two gallons, refer to your owners manual for exact amount.
antifreeze antifreeze a fifty fifty micture of water and antifrez is best
Nothing Nothing
antifreeze keeps your car from overheating, it flows thru your radiator hose, without it your motor would blow
The 2 are not compatible and should be completely drained to include the heater core. Then replace it with the green antifreeze as there is a class action suit against General Motors regarding Dexcool.
YES