Just thought I would put this out there, as I did not realize how many do not know this, its not top secret.

For all that run a Mack with electronic (computer) engine setup.   Write down you Mack VIR number and call the MackOne service line @  1-800-866-1177.  By doing so you can see if your unit is up to date and programmed correctly by Mack for today’s fuel / pumping and if there are any new updates/programs for your unit.  Some recommend you do this every six months, doing so has provided some with positive fuel economy results.  It’s a simple call.

That is a good tip. I hope everyone appreciates the telling