2013 RAM HDs driven/tested

..Was on the DEF thread and was asked about how the oil looked, at 982 miles, the oil looks very very clean...I'm impressed, I'm also averaging a little over 16 mpg doing all types of driving, including more than several stop and go trips this past week in the city and traffic....same type of driving would net me high 13's, low 14's, if that..so the oil is really clean for almost a thousand miles and I'm liking the mpg for no more miles than are what is on the truck....