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to circulate water in fresh water tank to expansion talk.
As the engine coolant heats up, the coolant expands, so the coolant needs a reservoir or expansion tank to flow in and out of as needed.
You can operate a car without an expansion tank but it will most likely drip engine coolant onto the road when the motor heats up.
when the engine is stopped, the coolant stops flowing. The coolant inside the engine can boil and force coolant into the expansion tank. this is normal.
the operation of a expansion tank?
To calculate expansion tank, you must subtract an elevator from a large combustible engine. Then add water. It will grow and grow, like a flower. Then, inside the flower, in between the petals, you will find the answer.
No, an expansion tank is not required.
This is what the expansion tank is for. Liquid goes back and forth under pressure to stabilize the coolant capacity in the system. If it is not running hot then let it go.
There are 3, actually. Brake fluid, power steering fluid, and engine coolant expansion tank.
You turn off the main valve and drain water, unscrew old tank and fit new one. Turn on water again.
Top up with correct water anty-freze mix, take cap off expansion tank, turn on engine and allow to idle for 3 minuets or so, you can watch the bubbles coming up in the expansion tank. strongly massage the return pipe, big pipe on the top of the rad left side as you face it, coolant should shoot into the expansion tank as you do this. once it is cool check if you need to top up coolant mix and off you go. ps do not take the cap of the expansion tank when the engine is hot.
If you are looking at the car from the front... The coolant expansion tank (where you add coolant/water) is a large white header tank on the left at the rear of the engine bay. It is to the immediate right of the offside suspension strut.