Engine Oil

New standard for engine oil, GF-4. See TSB EG018-06 032906 for additional information.

Engine Oil Type

GRADE API grade SL Energy-Conserving or ILSAC multigrade engine oil
VISCOSITY: SAE 5W-30

Note: The correct oil viscosity and fill level are critical for the proper performance of the 1NZ-FXE engine installed in 2001-2005 model year Prius vehicles. Incorrect engine oil viscosity or improper fill level may result in a M.I.L. "ON" condition (most common Diagnostic Trouble Code P3191 "Engine Does Not Start"). See TSB EG050-04.