Hi folks - photo of my oil filter canister and filler cap is linked below. Wanted to know if there is an element that goes inside this canister? Currently it just has a small amount of oil in it and no filter/element. On the top it has "AC" stamped on the bracket between the canister and the filler. Thanks for your help!

Oil Filter Photos 1951 GMC 1 Ton (238 straight 6)