2009 Toyota Highlander Owners Manual - Page 467

4-3. Do-it-yourself maintenance Power control unit coolant reservoir Reservoir cap "FULL" "LOW" If the level is on or below the "LOW" line, add coolant up to the "FULL" line. n If the coolant level drops within a short time after replenishing Visually check the radiator, hoses, coolant reservoir cap, drain cock and water pump. If you cannot find a leak, have your Toyota dealer pressure test the cap and check for leaks in the cooling system. n Coolant selection Only use "Toyota Super Long Life Coolant" or 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. (Enabled: -31°F [-35°C]) Canada: Toyota Super Long Life Coolant is a mixture of 55% coolant and 45% deionized water. (Enabled: -44°F [-42°C]) For more details about coolant, contact your Toyota dealer. 440