Which specification does Manual gearbox & axle oil need for the BMW R 45 (20 kW) (1978–1986)?

Manual gearbox & axle oil for the BMW R 45 (20 kW) (1978–1986): 75W-90, API GL5, MIL-L 2105 C.

Which specification does Gear oil need for the BMW R 45 (20 kW) (1978–1986)?

Gear oil for the BMW R 45 (20 kW) (1978–1986): 75W-90, API GL5, MIL-L 2105 C.

Which specification does Brake fluid need for the BMW R 45 (20 kW) (1978–1986)?

Brake fluid for the BMW R 45 (20 kW) (1978–1986): BMW QV 34 001, FMVSS 116 DOT 3.

Suitable for BMW R 45 (20 kW) (1978–1986)

For the BMW R 45 (20 kW) (1978–1986), the manufacturer specifies motor oil 10W-30 (API SP, JASO MA2), 10W-40 (API SL, API SN, API SN PLUS), 10W-50 (API SP, JASO MA2), 15W-50 (API SP, JASO MA2), or 20W-50 (API SN, API SP, JASO MA2).

Fluids and approvals for the BMW R 45 (20 kW) (1978–1986)

Fluid	Requirement
Motor oil	10W-30: API SP, JASO MA210W-40: API SL, API SN, API SN PLUS10W-50: API SP, JASO MA215W-50: API SP, JASO MA220W-50: API SN, API SP, JASO MA2
Manual gearbox & axle oil	75W-90, API GL5, MIL-L 2105 C
Gear oil	75W-90, API GL5, MIL-L 2105 C
Brake fluid	BMW QV 34 001, FMVSS 116 DOT 3