Went to Napa today to get a Napa Silver filter for my next OCI. They only had the Golds on the floor so I asked the gent behind the counter. I told him what I needed and he came back with a ProSelect (21085.. Resembles WIX numbers) Said they superseded the Silvers and are still WIX made. Is this correct? The Silvers are still listed on their site too.