It ONLY降级你的滤油器 or WASTE your time

For fine partial of metal in fast running oil, "超级磁铁" only slows down the oil flow (=降级le你的滤油器).Also, most filters are build by thick metal can which shield most magnetic. 对开新车的朋友, it like installed a lousy oil filter (if you have a real超级磁铁 on it)