Chevrolet Low Cab Forward 4500 2019 Series Owner's Manual page 301

300 Technical Data
Capacity
Engine oil Thermostat:
Starts to open
Radiator pressure
Model
Transmission oil capacity
Differential gear oil
capacity
Limited slip differential
lubricant additive
Fuel tank capacity *6
Steering wheel free play
Power steering fluid capacity
Engine Cooling System Service
15.0 L (15.9 qt)
85.5-87.5 °C (185.9-189.5 °F)
103 kPa (15 psi)
Transmission Service
12.2 L (25.7 qt)
Rear Axle Service
9.0 L (19.0 qt)
0.6 L (1.27 qt)
Fuel
113 L (29.9 gal)
Steering
6L90
*3
*4
*5
10 - 50 mm (0.39 - 1.97 in)
1.5 L (1.6 qt)