Lexus 2016 GS350 Owner's Manual page 529

The coolant level is satisfactory if it is between the "FULL"/"F" and "LOW"/"L"
4
lines on the reservoir.
Engine coolant reservoir
1
"FULL"/"F"
2
"LOW"/"L"
3
Coolant inlet cap
4
Intercooler coolant reservoir
5
GS350

GS200t

GS350_200t_GS F_OM_OM30E86U_(U)
7-2. Steps to take in an emergency
GS F

529
7