Hey All, Can anyone add some details here regarding the elimination of the "extra" vent line? I just replaced my electric coolant pump about 1500 miles ago, and replaced my upper hose with the 2009 2 piece version. Today however, I found my expansion tank now has a crack and is leaking. My questions are; 1) with the new vent line, do I need a different type of expansion tank cap? 2) could the expansion tank crack be a coincidence, ie how prone to failure are they? Thanks in advance.