5528-1. Specifications 
GS450h_300h_OM_OM30F92E_(EE)
Cooling system
Gasoline engine
Power control unit
Left-hand drive  
vehicles
Right-hand drive 
vehicles
Capacity
GS450h9.2 L (9.7qt.,  8.1 Imp.qt.)2.1 L (2.2qt., 1.8 Imp.qt.)1.9 L (2.0qt., 1.7 Imp.qt.)
GS300h8.1 L (8.6 qt., 7.1 Imp.qt.)1.6 L (1.7 qt., 1.4 Imp.qt.)1.8 L (1.9 qt., 1.6 Imp.qt.)
Coolant typeUse either of the following: 
• “Toyota Super Long Life Coolant” • Similar high-quality ethylene glycol-based non-sili-cate, non-amine, non-nitrite, and non-borate cool- 
ant with long-life hybrid organic acid technology Do not use plain water alone.
Ignition system
Spark plug
MakeGapDENSO FK20HBR80.8 mm (0.031 in.)
NOTICE
■Iridium-tipped spark plugs 
Use only iridium-tipped spark plugs.  Do not adjust the spark plug gap.