Hey yall I am in the process of buying my first Cummins. I'm looking at 5.9's and 6.7's. I know these questions will sound dumb, but hey we all start somewhere! First off what is an exhaust brake and when should it be used? How long should I let the engine idle in cold and hot weather? How do you idle down the engine? What is a good temp to shut down my engine and how do I know if I don't have aftermarket gauges (Dodge doesn't put egt temps in factory do they?) Finally where is a good place to fuel up at? I read the sticky but I still don't understand? I'm sorry but I did search and couldn't get direct information just technical questions and answers. Not general knowledge. :confused013: Thanks i'm just getting discouraged because I can't get any answers and I really want to make the switch from gas but I just want to do things right the first time!