It ONLY降級你的濾油器 or WASTE your time

For fine partial of metal in fast running oil, "超級磁鐵" only slows down the oil flow (=降級le你的濾油器).Also, most filters are build by thick metal can which shield most magnetic. 對開新車的朋友, it like installed a lousy oil filter (if you have a real超級磁鐵 on it)