Toyota Corola Owner's Manual page 539

NOTICE
■
When adding engine coolant
Add coolant slowly after the engine has cooled down sufficiently. Adding
cool coolant to a hot engine too quickly can cause damage to the engine.
■
To prevent damage to the cooling system
Observe the following precautions:
●
Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
●
Do not use any coolant additives.
COROLLA_TMMMS_TMMC_U (OM12F00U)
8-2. Steps to take in an emergency
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