TOYOTA 2011 Avalon - Manual (Page 423)

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4-3. Do-it-yourself maintenance
AVALON_U (OM41428U)
Engine coolant
The coolant level is satisfactory if it is between the “F” and “L” lines on
the reservoir when the engine is cold.
Reservoir cap
Full
Low
If the level is on or below the “L”
line, add coolant up to the “F” line.
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 pressure test the cap and
check for leaks in the cooling system.
n Coolant selection
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 coolant, contact your Toyota dealer.