578 6-1. Specifications
PRIUS_OM_OM47A17U_DVD_(U)
Cooling system
Ignition system
Capacity
Gasoline 
engine
Without an exhaust heat recovery system
6.9 qt. (6.5 L, 5.7 Imp.qt.)
With an exhaust heat recovery system
7.6 qt. (7.2 L, 6.3 Imp.qt.)
Power 
control 
unit2.2 qt. (2.1 L, 1.8 Imp.qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant” 
• Similar high-quality ethylene glycol-based non- silicate, non-amine, non-nitrite, and non-borate 
coolant with long-life hybrid organic acid technol-
ogy
Do not use plain water alone.
Spark plug
Make DENSO SC20HR11 
Gap 0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.