Vehicle is a 92 300 TE with about 140K miles.

It uses about 1 quart of oil 15W50 mobil 1 every 1750 miles with about half highway and half city.

Does that sound about normal? Vehicle does not leak any oil.

I think valve stem seals were replaced when head gasket replaced at 81K miles.

I could replace valve stem seals but not eager to do so.