It was apparently dangerous so I had them replace it (can't remember how much but I'm sure it was a rip off). I had just recently moved from out of state so I then had my van registered in my new state. 3,000 miles later I took it back in for another oil change and they told me the coolant cap was failing and it was dangerous... Once I explained that they fixed it last time, they looked pretty sheepish. Last time I went to Jiffy Lube.