Lexus GS 350 Owner's Manual page 465

464
6-3. Do-it-yourself maintenance
Intercooler coolant reservoir (GS300 only)
■
Reservoir cap
1
"F" line
2
"L" line
3
If the level is on or below the "L" line,
add coolant up to the "F" line.
(P. 599)
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.
"Toyota Super Long Life Coolant" is a mixture of 50% coolant and 50% deionized water.
(Minimum temperature: -35C [-31F])
For more details about coolant, contact your Lexus 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 Lexus dealer test the cap and check for leaks in the
cooling system.
WARNING
When the engine is hot
■
Do not remove the engine coolant reservoir cap, the intercooler coolant reservoir cap
or the coolant inlet cap. (P. 603)
The cooling system may be under pressure and may spray hot coolant if the cap is
removed, causing serious injuries, such as burns.
NOTICE
When adding coolant
■
Coolant is neither plain water nor straight antifreeze. The correct mixture of water and
antifreeze must be used to provide proper lubrication, corrosion protection and cool-
ing. Be sure to read the antifreeze or coolant label.
If you spill coolant
■
Be sure to wash it off with water to prevent it from damaging parts or paint.
GS350_300_GS F_OM_OM30J17E_(GE)