I have an ITG Performance filter that I am using in my 748. With the pollen season upon us I'd like to clean out the runners and airbox as well as cleaning the air filter itself. I know I can wash the filter with water and a little soap and allow it to dry then add some oil to the filter before reinstalling. Are all filter oils the same even though there are different types of filters on the market? Should I look for something from ITG specifically? Do I soak the filter or apply a light coating?