Help! oil in the air filter

Hi People I own a Ford escort xr3i convertible! Year of construction 18.12.1989. Now to my problem: In my air filter oil collects which then drips through the air filter opening to the outside. My air filter is rectangular. I am in the internet and in the car looking for the clock thing but can’t find it. So and now to my second problem According to my pleasant workshop is a ripple of my abs. Can give me one more info about the history. For example how you fix it or something thank you in advance Kai