I have a 2007 Express 3500 that warns me when I am due for an oil change. Does this monitor my driving habits and calculate oil change intervals according to the percentage of freeway or stop and go driving I do? If so does it also account for time spent in "Tow" mode with a shorter change interval?

 

No, it has a set mileage that when the truck arrives to that interval it sends a light to the dash. No driving habits or conditions are factored in whatsoever