oil changes and air cleaners

[michael a]

I just read a thread where the gentleman changes oil between 5 and 7 hundred miles on his A. Not talking about the synthetic oils but your standard multi viscosity oils why is this necesary? Modern oils are so much better now than when these cars were new I do not understand the low mileage oil changes. My A has no air breather, does K&N make one for our cars, or what do you suggest? I do not like starting my car with out a filter, let alone driving it. Thank you in advance for your input...