With the weekend nearly here, it's time to pop open the hood and take a trip down the trail of parts. Those battery terminals and posts that look like a high school science experiment gone wrong need to be cleaned. As long as you're there, find the right dipstick and check the oil. If it looks as if it could be bubbling up from the La Brea Tar Pits, then bust out the ramps or jack and jack stands and change the oil and filter. If the oil was that filthy, then checking and swapping out the air filter might not be a bad idea. After all that it will certainly be time to wash those microscopic contaminants and grubby hand prints off the car so you can look good while driving to get a Coney Island.