From the 2017 Ford GT owner's manual:
13.7 Qt (12.97 L) Castrol Edge® Supercar SAE 5W-50 Full Synthetic Motor
Oil - WSS-M2C-931-C
If you can't get Castrol then:
"We recommend Castrol Edge Supercar
5W-50 motor oil for your Ford GT. If this
oil is not available, use motor oils of the
recommended viscosity grade that meet
the Ford specification of WSS-M2C931-C
such as Motorcraft® 5W-50.
Do not use oil labeled with API SN service
category unless the label also displays the
API certification mark"
The GT calls for the same brake fluid as the GT350 - PM20 DOT4LV.
13.7 Qt (12.97 L) Castrol Edge® Supercar SAE 5W-50 Full Synthetic Motor
Oil - WSS-M2C-931-C
If you can't get Castrol then:
"We recommend Castrol Edge Supercar
5W-50 motor oil for your Ford GT. If this
oil is not available, use motor oils of the
recommended viscosity grade that meet
the Ford specification of WSS-M2C931-C
such as Motorcraft® 5W-50.
Do not use oil labeled with API SN service
category unless the label also displays the
API certification mark"
The GT calls for the same brake fluid as the GT350 - PM20 DOT4LV.