I have been running a system 1 for several years and I wouldn't run without one. If I don't do anything else between weekends I check that filter. It has saved me from a little problem becoming a big one several times. Keep in mind there is going to be some stuff in it every time you open it up. With mine it's a very fine non-ferrous material. If you check it every week you will know what is normal for your engine and if it changes then you know you have to take a closer look.