Toyota 2006 Prius Owner's Manual page 427

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Fuel
Fuel type:
Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or
higher
Fuel tank capacity, L (gal., lmp.gal.):
45 (11.9, 9.9)
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Hybrid battery
Type: Nickel- Metal hydride battery
Voltage: 7.2 V
Capacity: 6.5 Ah (3HR)
Quantity: 28
Overall voltage: 201.6 V
Service specifications
ENGINE
Valve clearance (engine cold), mm (in.):
Intake 0.17 - 0.23 (0.007 - 0.009)
Exhaust 0.27 - 0.33 (0.011 - 0.013)
Spark plug type:
DENSO SK16R11
NGK IFR5A11
Spark plug gap, mm (in.):
1.1 (0.043)
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