Engine Coolant; Coolant Selection; If The Coolant Level Drops Within A Short Time Of Replenishing - Toyota 2016 Highlander Service Manual

Engine coolant

The coolant level is satisfactory if it is between the "FULL" and "LOW"
lines on the reservoir when the engine is cold.
1
Reservoir cap
2
"FULL" line
3
"LOW" line
If the level is on or below the
"LOW" line, add coolant up to the
"FULL" line.
■

Coolant selection

Only use "Toyota Super Long Life Coolant" or a 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% deion-
ized water. (Minimum temperature: -31F [-35C])
Canada:
"Toyota Super Long Life Coolant" is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44F [-42C])
For more details about coolant, contact your Toyota dealer.
■

If the coolant level drops within a short time of replenishing

Visually check the radiator, hoses, engine coolant reservoir caps, 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.
HIGHLANDER_U (OM48F09U)
7-3. Do-it-yourself maintenance
513
7