Nissan Altima Owners Manual: Engine cooling system

The engine cooling system is filled at the factory with a pre-diluted mixture of 50% Genuine NISSAN Engine Coolant (blue) and 50% water to provide year-round anti-freeze and coolant protection. The anti-freeze solution contains rust and corrosion inhibitors. Additional engine cooling system additives are not necessary.

WARNING

● Never remove the radiator or coolant reservoir cap when the engine is hot.

Wait until the engine and radiator cool down. Serious burns could be caused by high pressure fluid escaping from the radiator. See precautions in “If your vehicle overheats” found in the “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

● Never use any cooling system additives such as radiator sealer. Additives may clog the cooling system and cause damage to the engine, transmission, and/or cooling system.

● When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent. Genuine NISSAN Long Life Antifreeze/Coolant (blue) is pre-diluted to provide antifreeze protection to -34° F (-37° C). If additional freeze protection is needed due to weather where you operate your vehicle, add Genuine NISSAN Long Life Antifreeze/Coolant (blue) concentrate following the directions on the container. If an equivalent coolant other than Genuine NISSAN Long Life Antifreeze/Coolant (blue) is used, follow the coolant manufacturer’s instructions to maintain minimum antifreeze protection to -34° F (-37° C). The use of other types of coolant solutions other than Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent may damage the engine cooling system.

● The life expectancy of the factory-fill coolant is 105,000 miles (168,000 km) or 7 years. Mixing any other type of coolant other than Genuine NISSAN Long Life Antifreeze/Coolant (blue), including Genuine NISSAN Long Life Antifreeze/Coolant (green), or the use of non-distilled water will reduce the life expectancy of the factory-fill coolant.

Refer to the NISSAN Service and Maintenance Guide for more details.

Engine compartment check locations
QR25DE engine 1. Power steering fluid reservoir 2. Engine coolant reservoir 3. Engine oil filler cap 4. Brake fluid reservoir 5. Air cleaner 6. Fuse block/ Fusible links 7. Battery 8. Engine ...

Checking engine coolant level
Check the coolant level in the reservoir when the engine is cold. If the coolant level is below the MIN level B , add coolant to the MAX level A . If the reservoir is empty, check the coolant le ...

Other materials:

Suspension ARM
Removal and Installation Removal 1. Remove the rear suspension assembly. Refer to RSU-12, "Removal and Installation". 2. Remove the connecting rod bracket from the suspension arm using power tools. 3. Remove the two suspension arm bolts and nuts from the suspension member side ...

Ignition signal
Description The ignition signal from the ECM is sent to and amplified by the power transistor. The power transistor turns ON and OFF the ignition coil primary circuit. This ON/OFF operation induces the proper high voltage in the coil secondary circuit. Component Function Check 1.INSPECTION ...

Headlamp (HI) circuit
Description The IPDM E/R (intelligent power distribution module engine room) controls the headlamp high relay based on inputs from the BCM over the CAN communication lines. When the headlamp high relay is energized, power flows through fuses 48 and 49, located in the IPDM E/R. Power then flo ...