TOYOTA 2011 Prius - Manual (Page 466)

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4-3. Do-it-yourself maintenance
4
Mai
n
tenan
ce and care
PRIUS_U (OM47685U) DVD
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 engine coolant, contact your Toyota dealer.
CAUTION
n When the hybrid system is hot
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.
NOTICE
n When adding the coolant
Coolant is neither plain water not straight antifreeze. The correct mixture of
water and anti freeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
n If you spill coolant
Be sure to wash it off with water to prevent it damage to parts or paint.