hey guys i want to replace my expansion tank. do i just swap out theold one for thenew one? when adding the coolant is there a valve to release all the air bubbles like in my honda? or just add the coolant. this will be my first time working on the s4 so i dont want to screw anything up.

 

it's just a straight swap, don't forget the coolant leval sensor in the bottom of the tank. As long as you don't drain the whole system you shouldn't need to bleed it.

 

What ^^he^^ said.

DO NOT put regular coolant in it, get the factory stuff, or just put in some distilled water.

 

Thanks for the help.