I had my tranny and differential fluids changed last Saturday along with my fuel filter. Does this require any sort of break-in period before I can drive the car hard? I plan on autocrossing this weekend. Thanks.

 

forgot to mention the car is a 3rd gen with just a dp if that matters.

 

Nope. Break-in is only for newly rebuilt things. Just make sure everything is tight, if you did it yourself, or if you didn't just keep an eye on things after each run. HAve fun!