First place wood is dead and does not need to be fed oil on raw wood that was never shellaced. The wood without a finish looks dry from age and not being finished. But to make it look better you can wipe on a light coat of boiled linseed oil. On the drawer runners I use an old white candle and rub on the runners to make them slide easy. Do this on the the drawer bottoms to that rub on the runners. If you wipe with linseed oil make sure you wipe it off well so it will cure fast. The oldtimers never wasted finishing products in area that would not be seen. The wood looks dry but really it is just fine. Hope this has answered your question.
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