1.) You absolutely MUST shorten your oil change intervals to 4/5000mi. The 7500mi interval for the 5cyl engines is just too long, considering their propensity to burn oil. A 10,000mi oil interval on these is a terrible idea, and sometimes I think the oil change light is mistakenly reset to 10,000mi. Make sure to use full synthetic of course, which your dealer should be doing. My shade-tree solution involves the use of 5W-40 by Liqui Moly, and I’ve seen positive results so far.
2.) Perform engine flushes with reputable engine-cleaning products every or every-other oil change. Your piston rings will get gummed up all over again, even after being replaced. I have my engine flushed by my mechanic immediately before my oil changes. At 120k, my 5cyl burned about as much as yours did before its first repair. It now burns next-to-nothing after a 24-hour B12 piston soak. You can read about those procedures here on Swedespeed. Not all are 100% effective, but they can’t hurt.
3.) Do you drive long-distance often? I’m assuming you do, since you’ve done 85k in 3 years. If you’re doing rideshare or delivery work, maybe you’re doing a lot of short trips – not exactly good for oil consumption, but not super terrible as long as the car is staying warm in between stops & starts. Highway driving and hard acceleration (yes, really) help ‘blow out the cobwebs’ and clear the engine of oil deposits.
4.) You should really check your PCV pressure. If the crankcase ventilation system is clogged, it will dramatically exacerbate your engine’s appetite for oil. At 200k your V60 may be ready for its third PCV valve, or, at the very least, for a new PCV diaphragm. If you’re on the original PCV box … hoo momma, time to change it. They aren’t called an “oil trap” for nothing.
5.) Check your oil every time you get gas, or thereabouts. Let the car sit for 5mins before you take a reading, or else it will seem even lower than it is. (Ask me how I know!) Your rod bearings and turbo will NOT be happy to operate on low oil.
6.) If your engine block is scored, well, your engine block is scored, and you got 200k out of your car. Not bad. A compression test might not be a bad idea, considering the engine’s history and the mileage on the car. A Ceratec additive might help coat some internal surfaces that could have worn prematurely from the minor oil starvation.
Good luck. Your car has a chance to keep going, but it’s time to do some investigation of your own. The dealer oil changes alone are no longer sufficient insurance against an engine failure. I sympathize with the annoyances of owning an oil-burner, but it does teach you a lot about tribology, car maintenance, and the like.