The tech told me for the first 500 or so miles to keep it below 50-55 mph? Is this right? I think it would be better if I slowly transitioned to the 60-65-70 as I get into the 300-400 mile range? Here's the backstory btw about the engine.. Have a 2004 A6, had some problems with engine light kept coming on. It's still under warranty and the dealership fixed it within the first day, gave it back the next day engine light went on again. They kept it for a few days, returned it after "fixing it" - same thing - engine light back on. This last time the tech told me he has no idea what's wrong and Audi HQ thinks its a "hairline fracture" of some sort. They offer to have a brand new engine sent to me from Germany free of charge and installed. Of course I took it. Now I have a brand new engine in my A6 and I'm driving Miss Daisy.