Air Filter For Diesel Engines

Symptoms of Wear or Failure

  • Poor gas mileage
  • Reduced engine power

Related Repair Advice

  • The air filter should be inspected, cleaned, and/or replaced every 12,000 to 15,000 miles
  • When replacing the air filter, dirt and debris should be removed from the air filter housing
  • Diesel air filters can be more expensive than their gas engine counterparts due to the extra filtering capacity required by a diesel engine
  • If oil has contaminated the air filter, it should be replaced; oil contamination may indicate a problem with the PCV system
  • Air filters will need to be replaced more often in vehicles driven in dusty and sandy areas