TSB: NOTE Service Bulletin No. T-SB-0168-16 ?2ZR-FXE Engine Oil Consumption Inspection Procedure? MUST be performed BEFORE continuing with the procedure in this bulletin. Some 2010 ? 2014 model year Prius PHV, Prius V, and Prius vehicles equipped with the 2ZZ-FXE engine may exhibit engine oil consumption. The piston and piston ring assembly have been changed to reduce the potential for oil consumption. Follow the Repair Procedure in this bulletin to address this condition.