Using your Injen NanoWeb Dry Air Filter is easy. Just install it in the designated air intake area of your vehicle as per the manufacturer's instructions. When it comes to maintenance, you can clean it with a light blast of compressed air. This helps remove dirt and debris that may have built up over time. You don't need to use any oil on the filter, which saves you time and also prevents potential issues with your MAF sensor. As for the cleaning frequency, it depends on your driving conditions. If you drive in dusty or dirty environments often, you may need to clean it more frequently. Always make sure the filter is completely dry before reinstalling it. And if you notice any damage to the filter, it's best to replace it to keep your engine running smoothly.