Hello to all. This is my first post about my first Subaru. I have the 2.5 and I noticed that the oil filter is right up front and easy to get to when you open the hood, a nice plus. But after the first oil change the area around the oil filter, the part that caches the oil when you unscrew the filer drains back into the engine along with all the sand and dirt that has collected in the little hole that drains it back into the engine.. Whats the best way to clean it ?