If The Coolant Level Drops Within A Short Time After Replenishing; Coolant Selection - Lexus IS250 2009 Service Manual

4-3. Do-it-yourself maintenance

If the coolant level drops within a short time after replenishing

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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

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