If you have a "Leak" from the cap either the cap needs to be replaced or the top of the Radiator is damaged.
It is normal for thermal expansion (water gets bigger when hot) to cause the coolant to go into the expansion tank when cars is hot and to be drawn back into the radiator as the engine cools
Please advise where the radiator cap is located on a 1994 ford thunderbird. I have to add a stop leak product to stop antifreeze leak and I cannot locate the cap.
A radiator cap would not cause a leak! However, if the radiator cap is holding pressure, other weak parts could signal issues in need of attention.
cap is off
Through the radiator cap no... But it does allow the antifreeze to come out through the cap if the pressure gets too high.
The 2001 Windstar has no radiator cap. It has an antifreeze bottle.
Got a leak somewhere alos check that your radiator cap rubber/seal is not worn out, fluids can be lost from their too.
Engine hot - normal Engine cool excessive pressure bad thermostat
It doesn't have one per se. The antifreeze overflow serves as the car's radiator cap. If you need to add antifreeze, add it there.
You need to have your antifreeze up to par and if it is a leak you are worried about until you get somewhere to have it fixed there are quick fix solutions such as Barr's Leak that you can use it will seal the leak temporarily to get you to where you are going. Do not ever open your radiator cap if your car has been running - only open it when it is cold.
In the bottle that has the radiator cap on it.
You likely need to replace your radiator cap - the rubber seal in the cap is worn.
To change coolant on a Toyota Corolla, place a bucket under the radiator. Open the radiator drain valve and remove the radiator cap. When all antifreeze drains out, close the drain valve. Then refill with fresh antifreeze and replace the radiator cap.