Honda PCX125 2011 Owner's Manual page 189

Specifications
Fuel & Lubricants
fuel
recommendation
fuel tank capacity
engine oil capacity
engine oil
recommendation
cooling system,
recommendation
cooling system,
capacity
182
Technical Information
unleaded gasoline, pump octane number of 86 or higher
1.64 US gal (6.2 )
after disassembly:
after draining: 0.8 US qt (0.8 )
API Service Classification SJ or higher except oils
labeled as energy conserving on the circular API service
label, SAE 10W-30, JASO T 903 standard MB,
Pro Honda HP4M 4-stroke oil or an equivalent
motorcycle oil
Pro Honda HP Coolant or an equivalent high quality ethylene
glycol antifreeze containing corrosion protection inhibitors
specifically recommended for use in aluminum engines
0.74 US qt (0.70 )
including reserve
1.0 US qt (0.9 )