2011 Lexus RX 350 Owners Manual - Page 540

4-3. Do-it-yourself maintenance Engine coolant The coolant level is satisfactory if it is between the "FULL" and "LOW" lines on the reservoir when the engine is cold. Reservoir cap "FULL" line "LOW" line If the level is on or below the "LOW" line, add coolant up to the "FULL" line. (→P. 587) n Coolant selection Only use "Toyota Super Long Life Coolant" or a similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with long-life hybrid organic acid technology. U.S.A.: "Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deionized water. (Minimum temperature: -31°F [-35°C]) Canada: "Toyota Super Long Life Coolant" is a mixture of 55% coolant and 45% deionized water. (Minimum temperature: -44°F [-42°C]) For more details about coolant, contact your Lexus dealer. 470