Check auto-rx.com
The idea is that piston rings can accumulate carbon and stick slightly in the lands, thus failing to exercise sufficient tension against the cylinder walls to control oil burning. The oil control ring needs to leave a very light film of oil on the cylinder wall to provide lubrication without leaving enough to burn excessively. With the engine turning at 2,500 rpm (for example), the pistons move up and down a lot, so a very small difference in oil passing the rings can show up noticeably.
I used the auto-rx product. Not sure it made any difference as my engine was already clean, but it will not cause harm and may well be of assistance in your case. (I found it interesting that the development originated in effectively cleaning ink from commercial printing presses)
I had, however, changed the oil much more frequently when first acquiring the car, just to generally clean it out. Later, when I pulled the oil pan to replace the seal, it was quite clean inside. Also, when checking valve adjustment and replacing cover gasket, the valve area is clean. There's quite a bit of heat in the combustion area, and conventional oil can "break down" from heat, leave a residue of gritty carbon which can accumulate around the rings, hence the original suggestion above - plus if it helps, is much more cost effective than any engine work involving disassembly.