Infiniti S51-D owner manual Checking Engine Coolant Level, Engine Cooling System

ENGINE COOLING SYSTEM

The engine cooling system is filled at the factory with a high-quality, year-round, anti-freeze coolant solution. The antifreeze solution contains rust and corrosion in- hibitors, therefore additional cooling sys- tem additives are not necessary.

WARNING

.Never remove the radiator cap when the engine is hot. Wait until the engine and radiator cool down. Serious burns could be caused by high pressure fluid escap- ing from the radiator. See precautions in “IF YOUR VEHICLE OVERHEATS” in the “6. In case of emergency” section of this manual.

.The radiator is equipped with a pressure type radiator cap. To prevent engine damage, use only a genuine NISSAN radiator cap.

CAUTION

When adding or replacing coolant, be sure to use only a Genuine NISSAN Long Life Antifreeze/Coolant (green) or equivalent with the proper mixture ratio of 50% antifreeze and 50% demineralized or dis-

tilled water. The use of other types of coolant solutions may damage the engine cooling system.

Outside			Deminera-
temperature		Antifreeze	lized water or
down to			distilled
8C	8F		water
−35	−30	50%	50%

SDI2198

CHECKING ENGINE COOLANT LEVEL

Check the coolant level in the reservoir when the engine is cold. If the coolant level is below MIN *2 , open the reservoir tank cap and add coolant up to the MAX *1 level. If the reservoir tank is empty, check the coolant level in the radiator when the engine is cold. If there is insufficient coolant in the radiator, fill the radiator with coolant up to the filler opening and also add it to the reservoir tank up to the MAX level *1 .

Tighten the cap securely after adding engine coolant.

Maintenance and do-it-yourself 8-9