Hmmm, that's kinda interesting.
We routinely change oil based on miles or hours of use; as it becomes contaminated with tiny metal shavings and combustion by-products which break down the oil and add acid, sludge, etc to it.

We know not to store a car for long periods with used old oil, as it has acids and moisture that can attack a stagnant engine.

But, if we are driving a car fairly routinely, but not a whole lot of miles (say 2000 per year) what would be the downside to changing the synthetic oil, say, every 3years or 6k miles?

I drive my Corvette about 4K miles per year, and usually change the oil twice
a year, at about 2k miles. But the car's oil-change computer is telling me I can go 12k miles! So, should I go at least a year on the Mobil 1 before changing it? (not that I probably will on my "baby", just curious).

DG