Cooling system > Coolant type
Use either of the following. • “Toyota Super Long Life Coolant” • 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.
Source: Toyota 2012 RAV4 Owners Manual Through May 2012 Production (OM42836U), page 491