Specifications - Note:  These specs only apply to the '03 VTX 1300S Retro
Lubrication System
  Engine oil capacity  After draining 3.7 quarts
After draining 3.9 quarts
After disassembly 4.5 quarts
Recommended engine oil
Pro Honda GN4 or HP4 (without molybdenum additives) - 4-stroke oil or equivalent motor oil
API service classification:  SG or Higher JASO T 903 standard:  MA Viscosity: SAE 10W-40
NOTE:  NC Brew recommends Amsoil SAE 10W-40 Synthetic High Performance Motorcycle Engine Oil
Oil pressure (at oil pressure switch) 77 PSI at 5,000 RPM @ 176° Fahrenheit
      Service Limit
Oil pump Tip clearance 0.15 (0.006) 0.20 (0.008)
Body clearance 0.15-0.21 (0.006-0.008) 0.35 (0.014)
Side clearance 0.02-0.07 (0.001-0.003) 0.10 (0.004)