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251 6-3. Do-it-yourself maintenance RC350AWD_RC350_RC300AWD_RC30 0_OM_(U)_1810 6 Mai na nc e a nd c are on the reservoir when the engine is ■ Engine coolant reservoir RC350/RC300 AWD RC300 Reservoir cap If the level is on or below the “LOW” line, P.309) ■ Intercooler coolant reservoir The coolant level is satisfactory if it is Reservoir cap If the level is on or below the “L” line, add P.309) ■ 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. “Toyota Super Long Life Coolant” is a mix- ture of 50% coolant and 50% deionized water. (Minimum temperature: -31°F [-35°C]) “Toyota Super Long Life Coolant” is a mix- ture of 55% coolant and 45% deionized water. (Minimum temperature: -44°F [-42°C]) your Lexus dealer. ■ If the coolant level drops within a short time of replenishing Visually check the radiator, hoses, engine and intercooler coolant reservoir caps, drain cock and water pump. dealer test the cap and check for leaks in the cooling system. A A |