So yesterday i noticed my truck is leaking power steering and its coming from the actually cap were u fill it up from. and it leaks alot and i want to fix it asap...so if anybody can help thanks

 

did they overfill it? is the cap broken?

 

well just ago weeks ago my gear box went out and and i got that replaced but just yesterday it leaked on my driveway and its not overfilled and the cap doesnt look broken. as if its just coming out when i turn the steering left and right with pressure..

 

I just noticed that the plastic valve that goes on the airbox is broken will that have anything to do with it?