An E-Core:
It is a filter pattern where the filter element is supported by a plastic, cylindrical cage with LARGE rectangular openings. The filter element can rupture at those openings much more easily if the oil pressure is high. This could at worst let filter element material clog a passage and starve a bearing of oil. At best this kind of failure will make for a filter that has lost most of its filtration ability.
Most canister designs have a metal cylinder with small holes. Look inside a filter and you will see.
E-Cores are cheaper to make, so they are becoming more common.
It is a filter pattern where the filter element is supported by a plastic, cylindrical cage with LARGE rectangular openings. The filter element can rupture at those openings much more easily if the oil pressure is high. This could at worst let filter element material clog a passage and starve a bearing of oil. At best this kind of failure will make for a filter that has lost most of its filtration ability.
Most canister designs have a metal cylinder with small holes. Look inside a filter and you will see.
E-Cores are cheaper to make, so they are becoming more common.