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Additional Maintenance Items
Every 30000 miles
(48000 km)
Replace climate-controlled (heated and
cooled) seat filter (if equipped).
Replace engine air filter.
Every 97500 miles
(156000 km)
Replace spark plugs.
Every 105000 miles
(168000 km)
Change engine coolant.
*
Inspect accessory drive belt(s).
**
Every 150000 miles
(240000 km)
Change automatic transmission fluid and filter.
Consult dealer for requirements.
Change front axle fluid (4WD vehicles).
Change rear axle fluid.
Change transfer case fluid (4WD vehicles).
Replace accessory drive belt(s) if not replaced
within the last 100000 miles (160000 km).
*
Initial replacement at six years or 105000 miles (168000 kilometers),
then every three years or 45000 miles (72000 kilometers).
**
If not replaced, inspect every 15000 miles (24000 kilometers).
Scheduled Maintenance 357
2013 Navigator (nav)
Owners Guide gf, 1st Printing
USA (fus)
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