I know this is a pretty simple question, so I am sorry i have to ask it. I just purchased a 2010 Audi A4 Quattro Sedan with the 2.0 4 cylinder with automatic transmission and moved to a location where the nearest dealership is 2.5 hours away. I have tried looking for a Bentley manual, but they aren't available for 2010, and the disk from the dealership is $250. Would anybody be able to instruct me on how to do regular maintenance on my Audi and what brand of fluids and filters are recommended? Also, I know 91 octane is recommended, but the highest they sell here in this area is 90, am I going to have any problems? This is my first Audi, so I am just trying to get familiar with it before I start making mods to it. Thanks for the help.