2002 Toyota Prius Owners Manual - Page 245

ENGINE LUBRICATION Oil capacity (drain and refill), L (qt, lmp. qt.): With filter Without filter Oil grade: API grade SJ "Energy-Conserving", SL "Energy-Conserving" or ILSAC multigrade engine oil is recommended. Recommended oil viscosity (SAE): 3.7 (3.9, 3.3) 3.4 (3.6, 3.0) COOLING SYSTEM Total capacity, L (qt., Imp. qt.): For gasoline engine 4.9 (5.2, 4.3) For electric motor and inverter and converter 2.6 (2.7, 2.3) Coolant type: "TOYOTA Long Life Coolant" or equivalent With ethylene-glycol type coolant for a proper corrosion protection of aluminum components Do not use alcohol type antifreeze or plain water alone. HYBRID TRANSAXLE Fluid capacity, L (qt., Imp. qt.): 4.6 (4.9, 4.1) Fluid type: Automatic transmission fluid Type T-IV or equivalent oil05u AUXILIARY BATTERY Open voltage at 20_C (68_F): 12.6 - 12.8 V Fully charged 12.2 - 12.4 V Half charged 11.5 - 11.9 V Discharged [Voltage that is checked 20 minutes after the key is removed with all the lights turned off] Charging rates: 3.5 A max. 236