JLG G12-55A Service Manual - Manual (Page 30)

General Information and Specifications
2-18 G10-55A, G12-55A
2.5.3 Capacities
Engine Crankcase Oil
Capacity with Filter Change 14 quarts (13,3 liters)
Fuel Tank
Capacity 38 gallons (144 liters)
Cooling System
System Capacity 20 quarts (18,9 liters)
Hydraulic System
System Capacity 60.5 gallons (229 liters)
Reservoir Capacity to Middle of Sight Gauge 33 gallons (125 liters)
Auxiliary Hydraulic Circuit Max Flow 10 gpm (37,9 lpm)
Transmission
Capacity with Filter Change 22 quarts (20,8 liters)
Transfer Case
Capacity 1.8 quarts (1,7 liters)
Axles
Differential Housing Capacity
Front 15 quarts (14,2 liters)
Friction Modifier (Front Only) 24 ounce (709,8 milliliter)
Rear 15.5 quarts (14,7 liters)
Wheel End Capacity 2 quarts (1,9 liters)
Air Conditioning System (if equipped)
System Capacity 2.5 lb (1134 grams)