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Valve stem seals, piston rings, and/or even the PCV valve. A clogged PCV valve will cause some oil burning. There are good write-ups on how to change it, though its location is not the best.
A thicker weight oil will help- but it will be masking a symptom- not curing the disease.
Those are good compression numbers but still, add a squirt of oil in each cylinder one at a time and check the numbers again- just to rule out piston rings.
Remember that an engine is essentially an air pump- any clogging of the breathing means that the engine will pull in oil, not air. Just make sure the previous owner did not do some weird things with the intake or breather tubes.
Report back please....
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