Originally Posted By: synman
Now here’s the real reason I ask, my wife drives a small car and puts on maybe 5 to 10 miles a day and that's it
She is a perfect candidate to own a Ford Focus Electric or Nissan Leaf or Hyundai Ioniq full-electric car. We use a Focus EV for trips of less than 70 miles per day. Can't use it for long trips out of town, but its great for any daily driving tasks. No oil changes or spark plugs or transmissions to maintain.
Originally Posted By: synman
wouldn't LC20 help keep the oil in top shape to survive the short drives? or is there a better product? I would hate to have to change the oil every 3 months because of the short drives destroying the oil
To fight the acid build-up from short trips, you could use Berryman's Engine Oil Extender, a product I saw the MSDS for and it has anti-oxidants (nice boost), moly, dispersants, and zddp to slow down degradation. Add a bit every month or so, like 1/4 the bottle at a time, until the bottle is used up, and it should extend the oil change interval from 3 months to 6 months. Then put in an engine flush in the last 50 miles before an oil change using any of the various ones you see at autoparts stores or walmart.
Also, something we've discussed here recently on these threads, and unique, is "Valvoline Premium Blue Restore". Only available at Cummins supply shops and RyderFleet online stores, maybe elsewhere I haven't heard. Its a high-POE high-solvency carbon attacker, and presumably sludge too, that I think may be good to use every 40,000 miles (64,000 km) for short-trippers like yours to clean out junk once in a while.