Lexus 2013 GS 350 Owner's Manual page 594

CAUTION
When the engine is hot
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Do not remove the engine coolant reservoir cap or the radiator cap.( P. 748)
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
When adding 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 from damaging parts or paint.
GS350_U (OM30C34U)
6-3. Do-it-yourself maintenance
I n f o r ma t i o n P r o v i d e d b y :
621
6