Are you saying that the engine uses a quart of oil every 1000 miles? If so, that is definitely not good!
However, there might be fixable reasons for this type oil consumption short of a mechanical engine repair:
1. Do the engine seals leak oil? Have you found oil leaks under the car?
2. A possible related problem. Has the PCV system ever been serviced? If not, the PCV hoses, EGR valve (if your car has one) or the breather box could be clogged and that will up engine oil consumption and probably cause the engine seals to leak.
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