IS 250C V6-2.5L (4GR-FSE) (2011)
Coolant: Fluid Type Specifications
Coolant Type
Use either of the following:
"Toyota Super Long Life Coolant"
A similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology.
Do not use plain water alone.