Which specification does Gear oil need for the John Deere 8000 series 8820 Titan II (1986–2000)?

Gear oil for the John Deere 8000 series 8820 Titan II (1986–2000): 75W-140, 80W-90, API GL4, API GL5.

Which specification does Brake fluid need for the John Deere 8000 series 8820 Titan II (1986–2000)?

Brake fluid for the John Deere 8000 series 8820 Titan II (1986–2000): DOT 3, FMVSS 116 DOT 3.

Coolant & antifreeze for the John Deere 8000 series 8820 Titan II (1986–2000): G11, G12.

Manual gearbox & axle oil for the John Deere 8000 series 8820 Titan II (1986–2000): 75W-140, 80W-90, API GL4, API GL5.

Axle & differential oil for the John Deere 8000 series 8820 Titan II (1986–2000): 75W-140, 80W-90, API GL4, API GL5.

For the John Deere 8000 series 8820 Titan II (1986–2000), the manufacturer specifies motor oil 15W-40 (ACEA A2, ACEA A3/B4, ACEA B3).