Scion xB excessive oil consumption leading to motor knocking despite recent oil change on Scion xB

Some Scion xB owners report experiencing excessive oil consumption, which can lead to engine knocking even after recent oil changes. Low oil levels are known to cause harsh knocking sounds as the engine becomes starved for oil. Infrequent oil changes may contribute to engine sludge or worn piston rings, further exacerbating oil consumption and risking engine damage. Specific models, such as the 2008 and 2012 Scion xB, have been highlighted for these issues, with owners noting the need to add oil more frequently than usual. To address excessive oil consumption, some owners have resorted to changing spark plugs, using higher viscosity oil, or employing products like AT-205. Various methods have been attempted, including replacing the valve cover gasket and mass airflow sensor, as well as running seafoam through the engine. Regular monitoring of oil levels and prompt action regarding any signs of excessive consumption are crucial to prevent engine knocking and potential damage in Scion xB vehicles.