I am new to the diesel. I grew up a mechanics son and understand engines, I understand how the engine brake works, but I must confess I am not sure I totally understand how to use it. Using it while towing down steep grades is easy (and the brake very effective) but as I read about the features it almost suggests that you should just turn it on all the time. Can someone point me to something that gives some detail on how to really use the integrated exhaust brake on the 6. 7? I read the articles in this months magazine, but I want more detail on when to turn it on and when to leave it off.