Product review (1 stars): Purchased 2 filters last year and had no problems but I re-ordered this year and have had problems with both leaking.
Something has changed since I ordered the first 2 filters last year. Both of those filters were fine. But the last order -  I changed out the first one early thinking it may have had a bad O ring causing a continual drip from the filter housing. Looked at O rings and both appeared to be fine. Put the new one in anyway and guess what- it leaked too. Just a continual drip, filling a cup under the filter housing every couple days. Factory using the wrong O rings in manufacture?