When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I heard that the nipple version does drain slower than the non nipple version, which is one of the reasons why i went with the non-nipple version. I have yet to install it though (waiting for my next oil change in a few thousand miles..)