When to change air filter?

I have a mitsubishi lancer GLX, 2006 model. Kindly let me know when I have to change the air filter, oil filter and engine oil. I mean once in how many thousand kilometers.When to change air filter?Oil and filter is every 5K, and just take the air filter out every time you change the oil, and hold it up in the air to see if the light passes through or not. If the light passes through and there is not a lot of visible dirt, blow it off with compresses air and put it back in. When it doesn't show light passing through it, or get a decent amount of dire that does not just blow off change it. Probably about every 30K though.When to change air filter?oil %26amp; filter every 5 to 8k, air depends on conditions dusty etc. Inspect and if you can see light through it it's fine.When to change air filter?that really depends on what conditions your driving in but typically once every 9720 kilometer,s (6000) miles. Or simply once every other oil change.When to change air filter?you can change air filter when ever you want twice a year or more is fine every other oil change and for oil it should be ever 3000 miles or about that more you do it the longer the motor will last really if air filter looks dirty it cost like 10 bucks or less and anyone can do that takes about five minutes you type into search box

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and learn all you want by reading about car care more you know the longer your car runsWhen to change air filter?Every 5k.