2023 Infiniti QX55 Engine Oil and Fluids

Managing the engine oil and fluids in the 2023 Infiniti QX55 is an important part of keeping the car’s great performance, dependability, and life. This high-end crossover SUV’s engine is its heart, and keeping its important fluids in good shape is essential to making sure it runs at its best. Engine oil, which is the powertrain’s heart, keeps important engine parts cool and lubricated while also reducing friction and wear. Besides oil, the QX55 needs other fluids like transmission fluid, coolant, brake fluid, and power steering fluid. Each of these plays a different role in how the car works overall. Keeping an eye on and managing these fluids the right way is important for protecting the engine, transmission, and brakes of the car, as well as keeping the Infiniti QX55’s safety, performance, and longevity. This care for detail shows that Infiniti wants to give customers not only a nice driving experience but also a car that keeps running at its best year after year.

ENGINE OIL

CHECKING ENGINE OIL LEVEL

1. Park the vehicle on a level surface and apply the parking brake.
2. Start the engine and let it idle until it reaches operating temperature.
3. Turn off the engine. Wait more than 10 minutes for the oil to drain back into the oil pan.
4. Remove the dipstick and wipe it clean. Reinsert it all the way.
   
5. 5. Remove the dipstick again and check the oil level. It should be between the H (High) and L (Low) marks OB . This is the normal operating oil level range. If the oil level is below the L (Low) mark AO, remove the oil filler cap and pour the recommended oil through the opening. Do not fill oil level above H (High) mark OC .
6. Recheck the oil level with the dipstick.

It is normal to add some oil between oil maintenance intervals or during the break-in period, depending on the severity of operating conditions.

CAUTION

CHANGING ENGINE OIL AND OIL FILTER

For additional information on engine oil and oil filter change, refer to the instructions outlined in this section.

Vehicle set-up

1. Park the vehicle on a level surface and apply the parking brake.
2. Run the engine until it reaches operating temperature.
3. Turn the engine off and wait for 15 minutes.
4. Raise and support the vehicle using a suitable floor jack and safety jack stands.

• Place the safety jack stands under the vehicle jack-up points.
• A suitable adapter should be attached to the jack stand saddle.

CAUTION

Make sure the correct lifting and support points are used to avoid vehicle damage.

Oil filler cap

Oil drain plug

Oil filter

Under engine protector

Removal of engine protectors

1. Remove clips AO and under the engine protector

Engine oil and filter

1. Place a large drain pan under the drain plug and oil filter.
2. Remove the oil filler cap.
3. Remove the drain plug with a wrench by turning it counterclockwise and completely drain the oil.

CAUTION

Be careful not to burn yourself, as the engine oil is hot.

WARNING

• Prolonged and repeated contact with used engine oil may cause skin cancer.
• Try to avoid direct skin contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as possible.
• Keep used engine oil out of reach of children.

1. Loosen the oil filter with an oil filter wrench by turning it counterclockwise. Remove the oil filter by turning it by hand.
2. Wipe the engine oil filter mounting surface with a clean rag.

CAUTION

Be sure to remove any old gasket material remaining on the sealing surface of the engine. Failure to do so could lead to an oil leak and engine damage.

• The dipstick must be inserted in place to prevent oil spillage from the dipstick hole when filling the engine with oil.

1. Coat the gasket on the new filter with clean engine oil.
2. Screw in the oil filter clockwise until a slight resistance is felt, then tighten additionally more than 2/3 turn.

Oil filter tightening torque

Clean and re-install the drain plug with a new washer. Securely tighten the drain plug with a wrench. Do not use excessive force.

Drain plug tightening torque

Refill the engine with the recommended oil through the oil filler opening, and install the oil filler cap securely.

For additional information about drain and refill capacity, see “Recommended fluids/lubricants and capacities” The drain and refill capacity depends on the oil temperature and drain time. Use these specifications for reference only. Always use the dip-stick to determine the proper amount of oil in the engine.

Start the engine and check for leakage around the drain plug and the oil filter. Correct as required. Turn the engine off and wait more than 15 minutes. Check the oil level with the dipstick. Add engine oil if necessary.

After the operation

1. Reinstall engine protectors in reverse order of removal.
2. Lower the vehicle carefully to the ground.
3. Reset the oil control system. For additional information, see “Oil control system”

• Dispose of waste oil and filter properly.
• Check your local regulations.

CONTINUOUSLY VARIABLE TRANSMISSION (CVT) FLUID

CAUTION

• INFINITI recommends using Genuine NISSAN CVT Fluid NS-3 (or equivalent) ONLY in INFINITI CVTs. Do not mix with other fluids.
• Do not use Automatic Transmission Fluid (ATF) or manual transmission fluid in an INFINITI CVT, as it may damage the CVT. Damage caused by the use of fluids other than as recommended is not covered under INFINITI’s New Vehicle Limited Warranty outlined in your Warranty Information Booklet.
• Using fluids that are not equivalent to Genuine NISSAN CVT Fluid NS-3 may also damage the CVT. Damage caused by the use of fluids other than as recommended is not covered under INFINITI’s New Vehicle Limited Warranty outlined in your Warranty Information Booklet.

When checking or replacement of CVT fluid is required, it is recommended that you visit an INFINITI retailer for this service.

BRAKE FLUID

WARNING

• Use only new fluid from a sealed container. Old, inferior or contaminated fluid may damage the brake system. The use of improper fluids can damage the brake system and affect the vehicle’s stopping ability.
• Clean the filler cap before removing it.
• Brake fluid is poisonous and should be stored carefully in marked containers out of reach of children.

CAUTION

Do not spill the fluid on any painted surfaces. This will damage the paint. If fluid is spilled, immediately wash the surface with water.

Check the fluid level in the reservoir. If the
brake fluid is below the MIN line OB , the brake warning light will illuminate. Add brake
fluid up to the MAX line AO. For additional information on the recommended type of brake fluid, see “Recommended fluids/lubricants and capacities”
If the brake fluid must be added frequently, the brake system should be thoroughly checked. It is recommended that you visit an INFINITI retailer for this service.
For additional information on the location of the brake fluid reservoir, see “Engine compartment check locations”

WINDSHIELD-WASHER FLUID

WINDSHIELD-WASHER FLUID RESERVOIR

Fill the windshield washer fluid reservoir periodically. Add windshield-washer fluid when the “Low Washer Fluid” warning message shows on the vehicle information display.
To fill the windshield-washer fluid reservoir, lift the cap off the reservoir and pour the windshield-washer fluid into the reservoir opening.

Add a washer solvent to the washer for better cleaning. In the winter season, add a windshield washer antifreeze. Follow the manufacturer’s instructions for the mixture ratio.
Refill the reservoir more frequently when driving conditions require an increased amount of windshield washer fluid.
Recommended fluid is Genuine NISSAN Windshield Washer Concentrate Cleaner & Antifreeze or equivalent.

CAUTION

• Do not substitute engine antifreeze coolant for windshield washer fluid. This may result in damage to the paint.
• Do not fill the windshield washer fluid reservoir with washer fluid concentrates at full strength. Some methyl alcohol-based washer fluid concentrates may permanently stain the grille if spilled while filling the windshield washer fluid reservoir.
• Pre-mix washer fluid concentrates with water to the manufacturer’s recommended levels before pouring the fluid into the windshield washer fluid reservoir. Do not use the windshield washer fluid reservoir to mix the washer fluid concentrate and water.
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