Service Intervals & Specifications

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2003 Infiniti QX4, 2003 Infiniti Q45, 2003 Infiniti M45, 2003 Infiniti I35, and 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

REPLACEMENT INTERVALS ⁽¹⁾

Component

Months ⁽²⁾

⁽²⁾ Miles

Accessory Drive Belts ⁽³⁾

60,000

Air Filter ⁽⁴⁾

30,000

Coolant ⁽⁵⁾

60,000

Fuel Filter

⁽⁶⁾

Oil & Filter

7500

Spark Plugs

⁽⁷⁾

Valve Clearance (Q45 Only)

⁽⁸⁾

⁽¹⁾	More often under severe operating conditions.

⁽²⁾	Perform at month or mile interval, whichever comes first.

⁽³⁾	After 60,000 miles, inspect every 12 months or 15,000 miles. Replace, if necessary.

⁽⁴⁾	If operating mainly in dusty conditions, more frequent maintenance may be required.

⁽⁵⁾	First change, then every 24 months or 30,000 miles.

⁽⁶⁾	On Q45, fuel filter is maintenance-free.Information not available from manufacturer.

⁽⁷⁾	Replace platinum spark plugs every 105,000 miles. Replace conventional spark plugs every 30,000 miles.

⁽⁸⁾	If valve noise increases, inspect valve clearance.