I went to purchase a Mobil 1 Extended Performance filter at Napa the other day for my Wifes Bravada and I blow into the filters to make sure the ADBV is sealing correctly because Bravada's have a horizontally mounted external filter and I found 4 leakers before I found one that seals correctly...is this a common problem with Mobil 1 filters? I usually run Conventional oil and Napa Gold filters for 5,000 miles and never found a leaking Napa Gold. I am going to do extended OCI's so I bought Mobil 1 Extended Performance oil and thought I would use their filter as well but now I am second guessing the quality of their filters.
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