I have some startup noise on a 4.6L DOHC Ford motor. As Many of you know already I have an Amsoil DR By-Pass system on the car. This motor only has about 12,500 mi. The filters are mounted vertically, and the by-pass is about 2' (feet) away from the stock oil filter location. Someone mentioned about Ford specifying the FL-820S becuase of it's Silcon ADBV. With the intent it seals better. Then allows oil to flow imediately to the top-end of these OHC motors. By moving the filters, did that cause an issue. The dipstick measures full. Amsoil S2k 0W30 What might fix this issue. Besides removing the by-pass filter system.