Select from options: Continue writing the next sentence.

How to change a car radiator
Take off the radiator cap.
Only do this when the engine is cool. This will release pressure on the cooling system and prevent vacuum lock when draining.

pick from the following.
*Reduce pressure on the cold radiator by a quarter. Remove radiator cover and drop coolant into hose already in place.
*After removing the radiator cap, let the engine cool. Slide off the radiator cap and use a screwdriver to rotate the radiator cap counterclockwise to unscrew it.
*Insert a fan to take the temperature. The temperature slider on the side of the radiator should be set to 120 degrees fahrenheit (14 degrees celsius).
*Squeeze the radiator hoses. If you feel a crunching sensation when you squeeze the hoses you probably have rust in the cooling system.
Answer:
Squeeze the radiator hoses. If you feel a crunching sensation when you squeeze the hoses you probably have rust in the cooling system.