2008 Dodge Nitro Owner Manual - Page 402

M 402 MAINTENANCE SCHEDULES A I N T E N Maintenance Items A N Check the PCV valve, replace if necessary. C Change the manual transmission fluid if using your E vehicle for any of the following: trailer towing, snow S C H E D U L E S Perform Maintenance Every (Where time and mileage are listed, follow the interval that occurs first.) Miles 30,000 Kilometers 50 000 or Months 30 8 plowing, heavy loading, taxi, police, delivery service (commercial service), off-road, desert operation or more then 50% of your driving is at sustained high speeds during hot weather, above 90°F (32°C). Inspect the transfer case fluid. Replace the spark plugs (3.7L Only). Change the automatic transmission fluid & filter if using your vehicle for any of the following: police, taxi, fleet or frequent trailer towing. Change the transfer case fluid if using your vehicle for any of the following: police, taxi, fleet, off-road or frequent trailer towing. 30,000 50 000 30 30,000 30,000 60,000 50 000 50 000 100 000 30 30 60 60,000 100 000 60