Which specification does Manual gearbox & axle oil need for the MG MGB (USA/CAN) (1974–1980)?

Manual gearbox & axle oil for the MG MGB (USA/CAN) (1974–1980): 20W-50, API CC, API SC.

Which specification does Axle & differential oil need for the MG MGB (USA/CAN) (1974–1980)?

Axle & differential oil for the MG MGB (USA/CAN) (1974–1980): 85W-90, API GL5, DTFR 12B100.

Which specification does Brake fluid need for the MG MGB (USA/CAN) (1974–1980)?

Brake fluid for the MG MGB (USA/CAN) (1974–1980): DOT 3, FMVSS 116 DOT 3.

Suitable for MG MGB (USA/CAN) (1974–1980)

For the MG MGB (USA/CAN) (1974–1980), the manufacturer specifies motor oil 10W-30 (API SF), 10W-40 (ACEA A3, ACEA A3/B3, ACEA B4), 15W-40 (API SF), or 20W-50 (ACEA A3, ACEA A3/B4, ACEA B4).

Fluids and approvals for the MG MGB (USA/CAN) (1974–1980)

Fluid	Requirement
Motor oil	10W-30: API SF10W-40: ACEA A3, ACEA A3/B3, ACEA B415W-40: API SF20W-50: ACEA A3, ACEA A3/B4, ACEA B4
Manual gearbox & axle oil	20W-50, API CC, API SC
Axle & differential oil	85W-90, API GL5, DTFR 12B100
Brake fluid	DOT 3, FMVSS 116 DOT 3