First off, it's CUMMINS, not CumminG A football weekend, from Friday 6 pm to Sunday 6m is only 48 hours. You would get three weekends before reaching oil change interval of 150 hours, which is what Cummins recommends. You could go longer, but you'd void any warranty and shorten the life of the generator engine. 150 hours is a pretty long interval, most lawnmower manufacturers recommend at least once a year and I only run my mower about 20 hours a year.
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI