Do i need to change my oil cooler?
 

[SIZE="3"][/SIZE I'm getting ready to change my EGR cooler with an upgraded one the old which convienently enough is not covered by my warrany. Do I have to change the oil cooler as well?

You dont have to but it isnt a bad idea just to help prevent having to tear into again too early. If you are planning on doing head studs in the near future that would also be a great time to do it.