can someone please tell me why u have to oil the filter and do u have to do it because i thought that would attract more dust...

 

From K&N's website...

"
A K&N Air Filter is made of 4 to 6 layers of cotton gauze sandwiched between two epoxy-coated aluminum wire screens. The cotton is treated with a specially formulated grade of oil causing tackiness throughout the cotton’s microscopic strands. The nature of the cotton allows high volumes of airflow, and when combined with the tackiness of the oil creates a powerful filtering media that ensures engine protection. In contrast, most other media can not maintain the same balance of airflow and filtration throughout the filter's life without sacrificing one or the other. With a K&N Air Filter, there is no sacrifice. "

-Brian

 

Rather catch it than not catch it in my opinion, just keep your eye on it if you are in a super dusty area, otherwise no worries.

 

I've been cleaning mine every 10k miles, but remember to take it easy when you mist it with the spray or you will screw up the sensor.