Airfilter is easy enough to do. Sump plug is a pain to get to just because the engine undertray is a pain. I use plastic tiegrips clips to hold it back on. Here is the housing of the oil filter. The top unscrews to reveal the paper filter. The top has a long plastic part that holds the filter in place. Bottom has a small rubber gasket, and the top has a bigger gasket to go around the rim. The fuel filter can be seen in the pic to the left.