I tend to drive only five to ten-miles per week.
I do occasionally try to drive for 20 - 30-minutes to “boil the water out of the oil” but my concern is about the gasoline.
I’ve read about the issues with funky old fuel, well described on the Stabil web site.
I typically will fill my tank when it gets to 3/4 full (to help minimize condensation … if that even is still an issue with modern cars). But…that means that most of the fuel is many months old. It would seem to me that the fuel would get funky.
My owner’s manual warns against using any gasoline additives. (it is a 2006 BMW X3, 3.0-liter straight 6, naturally aspiring engine).
I only use Exxon/Mobil (87 octane since premium is not required, just recommended and the engine never knocks - and even if that degrades the power and torque, I don’t really care).
It might be my imagination, but I recently did a 200+ mile drive and did not refuel until the tank was about 1/3 full - it might have run “smoother” after the new fuel was added - but since I was looking for a change, it could have just been my mind thinking it did.
ps: I keep my battery plugged into a battery charger/maintainer so I’m not worried about that.