Auto Filters

 Purpose: Capture dust and other particles to prevent them from entering the engine

Function: Trap airborne dust particles before they enter the engine.

Signs of wear: Excessively dirty filter element, decreased engine performance, increased fuel consumption.

Replacement: Every 12,000 to 25,000 miles or as needed per visual inspection. 

 Purpose: Capture dust, pollen, and other particles and prevent them from entering the vehicle's cabin (the air you breathe)

Function: Prevents airborne particles from entering the vehicle's cabin; some designs also remove odors, fumes and smoke.

Signs of Wear: Excessively dirty filter element, poor cabin ventilation/airflow (Blower motor damage could occur if a plugged filter goes unchanged for a long period of time).

Replacement: Every 12,000 to 15,000  miles or once per year. Similar to your home air conditioning filter.

 Purpose: Prevent tiny particles of dirt from clogging up the fuel injectors

 Function: Traps fuel contaminants before they enter the engine's fuel delivery system.

Signs of Wear: Rough-running engine, poor acceleration, decreased fuel economy, decreased power at high road speeds.

Replacement: Every 30,000 to 60,000 miles. Manufacturer recommendations may vary. Not all fuel filters are serviceable as some only come with fuel pump.