just bought a 2002 audi a4 3.0 w/ 70k miles for 15.2k from a dealership, wasn't a good deal but i knew i kinda dove into it out of desperation anyway. Although the engine and interior all looks well taken care of... i just found out there's an engine oil leak, drips like about a lil over a quarter sized drop a day in the garage, i'm bringing it back to the dealership next week to see what they can do. I'm no mr fix-it but just to get some tips from you self-mechanics, what else would you guys probably check for right away if you got a 70k mile a4?