My apologies if this has been covered before! I don't know if any of you use Baldwin oil filters, but I was looking on a site that showed a pic of their "B4" (their # for a Corvair filter): _http://www.adiesel.com./prodinfo.php?sku=B4_ (http://www.adiesel.com./prodinfo.php?sku=B4) As you can see, it appears they have gone the route of Purolator and Fram with the gasket from hell. :-/ Pat B. Speedway, IN