I just learned a lesson.

I bought my 1996 Toyota tercel on ebay and got it home. I drove it home 2200 miles and was very impressed to get 42-45 mpg.
It has the 1.5L 16V, 4 speed and uses a quart of oil every 1000 miles!!! I changed the dirty oil and was really surprised to see the under side of the engine was dry - no leaks. The car doesn't really show any blue smoke when it runs. Also the car never gets hot, the temp gauge stays in the same place after it warms up to normal operating temp.
Is this normal?
Where could it be going?
Does it need a valve job or head work?

Thanks in advance!