My owner's manual specifies a 22,500 mile replacement interval for the engine air filter and a 15,000 mile interval for the cabin air filter. However, Schedule 2 calls for a 30k mile interval and a 25k mile interval, respectively. Why would the intervals be further apart in harsher driving conditions?
early_apex
Air filter replacement schedule
You haven't stated anything about your car. Unless you have the details in your sig or avatar, always assume that nobody knows you or your car. Otherwise only a guess will be coming your way in the form of an answer.
"Harsh" driving conditions refers to mostly highway driving. Notice that there is a subscript (1) that explains things a bit further under Remarks:
*1. If the vehicle is operated in very dusty or sandy areas, clean and if necessary, replace the air filter more often than the recommended intervals.
So if the car is being driven on the I95 between Miami, FL and Houlton, ME for most of its life, change the filter at 30,000 miles. If it is a mix of the I95 and some city driving in a few major cities along the way, 22,500 miles. But if the car spends its time in the deserts around Albuquerque, NM then you will need to change the air filter at a more frequent interval. Rule of thumb, generally, is to remove the filter and hold it up the the sun/light source. If you can see the light source through the filter, you can continue using it. Significant blockage of that light source means its time to change it.
*1. If the vehicle is operated in very dusty or sandy areas, clean and if necessary, replace the air filter more often than the recommended intervals.
So if the car is being driven on the I95 between Miami, FL and Houlton, ME for most of its life, change the filter at 30,000 miles. If it is a mix of the I95 and some city driving in a few major cities along the way, 22,500 miles. But if the car spends its time in the deserts around Albuquerque, NM then you will need to change the air filter at a more frequent interval. Rule of thumb, generally, is to remove the filter and hold it up the the sun/light source. If you can see the light source through the filter, you can continue using it. Significant blockage of that light source means its time to change it.
Thank you for clarifying that. The maintenance schedules read like a mystery novel, with so many plot twists and turns.
As owners, we are give great latitude in deciding how dusty and how hot our driving conditions are.
I will stick with the more conservative numbers and aim for a higher than average quality of care.
As owners, we are give great latitude in deciding how dusty and how hot our driving conditions are.
I will stick with the more conservative numbers and aim for a higher than average quality of care.
Air filter: Change when dirty.
To determine if dirty, remove and look through it (at oil change intervals is a good time.) If it is materially blocked for light passage, change it.
Or do what I did and put a restriction indicator on the housing so you don't have to open it up to see. Some trucks have them and they can be pretty-easily installed on the "clean" side of the filter housing (the cap.)
To determine if dirty, remove and look through it (at oil change intervals is a good time.) If it is materially blocked for light passage, change it.
Or do what I did and put a restriction indicator on the housing so you don't have to open it up to see. Some trucks have them and they can be pretty-easily installed on the "clean" side of the filter housing (the cap.)
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