Antifreeze for Lexus
The Lexus RX, NX, ES, GS and the hybrid RX 400h and RX 450h are Toyota platforms with the same cooling requirement: pink SLLC. That is why your product is Valvoline Zerex Asian Red, which names Lexus directly on the bottle.
Photographs come from the manufacturer's official materials.
Hybrid Lexus and the inverter circuit
The RX 400h, RX 450h, NX 300h and CT 200h run two cooling circuits: one for the engine and one for the inverter and power control unit. The inverter circuit often goes unserviced for years simply because owners do not know it exists.
Toyota specifies pink SLLC for both circuits, so the red type goes into each. Leave the inverter circuit itself to a dealer or a hybrid specialist, because bleeding it is a procedure of its own.
What one bottle gives you
Valvoline Zerex Asian Red is a concentrate. One bottle, 1 US gallon (3.78 L) concentrate, yields 7.5 litres of ready-to-use coolant at 50/50, which covers a full fill on most Lexus models.
According to the data sheet the fluid meets ASTM D3306 and JIS K 2234, with a service life of 5 years or 240,000 km. In the aluminium pump cavitation test it scores 10 against a required 8.