Toyota Matrix 2009 Owner's Manual page 228

Engine coolant
The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the engine is cold.
n If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, coolant reservoir cap, radiator cap, drain
cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
Coolant selection
n
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 Toyota dealer.
CAUTION
When the engine is hot
n
Do not remove the coolant reservoir cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing burns or other injuries.
4-3. Do-it-yourself maintenance
Reservoir cap
"FULL"
"LOW"
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line. (→P. 385)
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