Honda VTX1300T 2009 Owner's Manual page 202

Specifications
Fuel & Lubricants
fuel recommendation
fuel tank capacity
fuel tank reserve
engine oil capacity
engine oil
recommendation
final drive oil capacity
cooling system,
recommendation
cooling system,
capacity
194
Technical Information
unleaded gasoline, pump octane number of 86 or higher
4.76 US gal (18.0 )
1.16 US gal (4.4 )
after disassembly:
after draining: 3.7 US qt (3.5 )
after draining & oil filter change:
API Service Classification SG or higher except oils
labeled as energy conserving on the circular API service
label, SAE 10W-30, JASO T 903 standard MA,
Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-
stroke oil (Canada only), or an equivalent motorcycle oil
after draining: 4.1 US oz (120 cm )
Pro Honda HP Coolant or an equivalent high quality
ethylene glycol antifreeze containing corrosion protection
inhibitors specifically recommended for use in aluminum
engines
2.9 US qt (2.7 )
including reserve
4.5 US qt (4.3 )
3.9 US qt (3.7 )