2011 Lexus IS 350 Owners Manual - Page 383

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4-3. Do-it-yourself maintenance

4

■

If the coolant level drops within a short time after replenishing

Visually check the radiator, hoses, engine coolant filler cap, radiator cap, drain cock

and water pump.

If you cannot find a leak, have your Lexus dealer pressure test the cap and check for

leaks in the cooling system.

■

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 engine coolant, contact your Lexus dealer.

CAUTION

■

When the engine is hot

Do not remove the radiator cap.

The cooling system may be under pressure and may spray hot coolant if the cap is

removed, causing burns or other injuries.

NOTICE

■

When adding engine coolant

Coolant is neither plain water nor straight antifreeze. The correct mixture of water

and antifreeze must be used to provide proper lubrication, corrosion protection

and cooling. Be sure to read the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to prevent it damaging parts or paint.