Nissan Altima (L34) 2019-2024 Owners Manual: Explanation of scheduled maintenance items

The following descriptions are provided to give you a better understanding of the scheduled maintenance items that should be regularly checked or replaced. The maintenance schedule indicates at which mileage/time intervals each item requires service.

In addition to scheduled maintenance, your vehicle requires that some items be checked during normal day-to-day operation.

For additional information, see "General maintenance".

Items marked with "*" are recommended by NISSAN for reliable vehicle operation.

You are not required to perform maintenance on these items in order to maintain the warranties which come with your NISSAN. Other maintenance items and intervals are required.

When applicable, additional information can be found in the "Do-it-yourself" section of this manual.

NOTE:

NISSAN does not advocate the use of non-OEM approved aftermarket flushing systems and strongly advises against performing these services on a NISSAN product. Many of the aftermarket flushing systems use non-OEM approved chemicals or solvents, the use of which has not been validated by NISSAN.

For recommended fuel, lubricants, fluids, grease, and refrigerant, see "Recommended fluids/lubricants and capacities".

Emission control system maintenance:

Air cleaner filter: Replace at specified intervals.

When driving for prolonged periods in dusty conditions, check/replace the filter more frequently.

Engine coolant*: Replace coolant at the specified interval. When adding or replacing coolant, be sure to use only Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent with the proper mixture. (For additional information on the proper mixture for your area, see "Engine cooling system".

Engine drive belts*: Check engine drive belts for wear, fraying or cracking and for proper tension. Replace any damaged drive belts.

NOTE: Mixing any other type of coolant or the use of non-distilled water may reduce the recommended service interval of the coolant.

Engine oil and oil filter: Replace engine oil and oil filter at the specified intervals. For recommended oil grade and viscosity see "Recommended fluids/lubricants and capacities".

Engine valve clearance*: Inspect only if valve noise increases. Adjust valve clearance if necessary.

Fuel tank vapor vent system*: Check vapor lines for leaks or looseness. Tighten connections or replace parts as necessary.

Fuel filter: Periodic maintenance is not required.

(in-tank type filter)

Fuel lines/connections*: Check the fuel hoses, piping and connections for leaks, looseness, or deterioration. Tighten connections or replace parts as necessary.

Spark plugs: Replace at specified intervals.

Install new plugs of the type as originally equipped.

Chassis and body maintenance:

Brake lines and cables: Visually inspect for proper installation. Check for chafing, cracks, deterioration, and signs of leaking.

Replace any deteriorated or damaged parts immediately.

Brake pads and rotors: Check for wear, deterioration and fluid leaks. Replace any deteriorated or damaged parts immediately.

Exhaust system: Visually inspect the exhaust pipes, muffler and hangers for leaks, cracks, deterioration, and damage. Tighten connections or replace parts as necessary.

Propeller shaft(s): Check for damage, looseness, and grease leakage. (AWD) In-cabin microfilter: Replace at specified intervals. When driving for prolonged periods in dusty conditions, replace the filter more frequently.

Steering gear and linkage, axle and suspension parts, drive shaft boots: Check for damage, looseness, and leakage of oil or grease. Under severe driving conditions, inspect more frequently.

Tire rotation: Rotate tires at the specified interval shown in the maintenance schedule.

When rotating tires, check for damage and uneven wear. Replace if necessary.

Transmission fluid/oil, differential gear oil (AWD models), and transfer fluid (AWD models): Visually inspect for signs of leakage at specified intervals.

Replace at specified intervals.