Not to belabor the issue however (why not...) I would recommend you read up on the "severe duty" vs. "normal" oil change schedule from the owners manual. I don't have access to the manual at the moment however most state that "severe duty" is a lot of city stop and go, short distance driving, excessive idling (think taxi) or towing heavy.
One dealer blurb about the service schedule said that normal use is an 8000 mile change but towing or other forms of severe usage is more frequent:
Driving Conditions
"These service intervals serve as a good guideline for how often your Ram needs service, but your vehicle's ideal schedule may vary. Many factors influence your vehicle's health and service intervals, but the most important is your driving conditions.
Severe driving conditions subject your vehicle to excess stress and wear, meaning you may need more frequent service and maintenance to keep it operating at its peak. Such conditions include stop-and-go driving, heavy towing and hauling, a lot of driving over short distances at low speeds and driving in extreme climates with excessively hot or cold temperatures. If any of these conditions apply to you, it's best to consult a service technician to ensure that your vehicle is getting the care it needs."
While they don't give a mileage recommendation, (remember this isn't the manual) You can presume somewhere between 5 and 6K for severe use. Of course this is with good oil, not re-refined 30w lawnmower stuff. Theres plenty of threads about whose oil is best...
For the other end of the advice spectrum, here's an older 2013 article excerpt from Edmunds:
https://www.edmunds.com/car-maintenance/stop-changing-your-oil.html
Begin article quote:
Stop Changing Your Oil!
by Philip Reed, Senior Consumer Advice Editor
April 23rd, 2013
Oil chemistry and engine technology have evolved tremendously in recent years, but you'd never know it from the quick-change behavior of American car owners. Driven by an outdated 3,000-mile oil change commandment, they are unnecessarily spending millions of dollars and spilling an ocean of contaminated waste oil.
The majority of automakers today call for oil changes at either 7,500 or 10,000 miles, and the interval can go as high as 15,000 miles in some cars. Yet this wasteful cycle continues largely because the automotive service industry, while fully aware of the technological advances, continues to preach the 3,000-mile gospel as a way to keep the service bays busy. As a result, even the most cautious owners are dumping their engine oil twice as often as their service manuals recommend.
After interviews with oil experts, mechanics and automakers, one thing is clear: The 3,000-mile oil change is a myth that should be laid to rest. Failing to heed the service interval in your owner's manual wastes oil and money, while compounding the environmental impact of illicit waste-oil dumping.
"Vehicles are so sophisticated that oil is one of the last things that customers can have a direct influence over," said Matt Snider, project engineer in GM's Fuels and Lubricants Group. "There's maybe some feeling that they're taking care of their vehicle if they change their oil more often."
The 3,000-mile myth is also promoted by the quick-lube industry's "convenient reminder" windshield sticker. It is a surprisingly effective tool that prompts us to continue following a dictate that our fathers (or grandfathers) drummed into our heads: It's your duty to change your oil every 3,000 miles — or your car will pay the price. But as former service advisor David Langness put it, the 3,000-mile oil change is "a marketing tactic that dealers use to get you into the service bay on a regular basis. Unless you go to the drag strip on weekends, you don't need it."
End of copied excerpt.
So, change it when you think it's due.
Want warm fuzzies? Change it more often.
Want to save money (at least short-term)? Follow the maintenance minder.
Trade every 2-3 years? Don't waste money on excessive oil changes.
Me, I'll continue to change her trucks oil at least every 5K, and perhaps more often when I get the cheapo "get you into the service door" coupons for $19.95... we dont put much mileage on (750 per month so far) so it sits a lot. I don't think oil is hydroscopic like brake fluid yet at least semi-annual oil changes should be considered.