Hyundai NEXO 2019 Owner's Manual page 500

Specifications, Consumer information and Reporting safety defects
R R E E C C O O M M M M E E N N D D E E D D L L U U B B R R I I C C A A N N T T S S A A N N D D C C A A P P A A C C I I T T I I E E S S
To help achieve proper vehicle performance and durability, use only lubricants of the proper quality.
These lubricants and fluids are recommended for use in your vehicle.
Lubricant
Reduction gear fluid
Fuel cell stack
Coolant
Traction motor
Brake fluid
Fuel
8-6
Volume
1.06 US qt (1 l) GL4 75W/85, TGO-9
We recommend that you consult an authorized Hyundai dealer.
Amount required SAE J1703, FMVSS116 DOT-3 or DOT-4
165.48 US qt. (156.6 l) Hydrogen (SAE J2719 or ISO 14687-2)
Classification