Maintenance?
 

I just bought a 1999 A4 Avant Quattro Wagon. The engine is the 2.8L V6 and has 150,000. Before i bought i checked the car over and everything seemed to be in order. Its in great condition and all the maintenance records were kept throughout the years. I bought it in the Outerbanks while i was on vacation and drove it 500 miles home. During the drive it performed great and i had no problems. I was just wondering if anyone would recommend i check any thing specific being that it is such a high mile car, or have suggestions on what to watch out for?