Lexus GX460 Manual page 620

4-3. Do-it-yourself maintenance
If the coolant level drops within a short time after replenishing
■
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and
water pump. 
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
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 the 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 damage to parts or paint.
620
GX460_U.S.A. (OM60G24U)