dissapering oil

I own a 1995 buick century with the 3.1 liter v6 and every time i drvie the thing the car seems to burn an average of half a quart every time and I drive it about 60 miles a day and its not leaking any where and it is not burning oil that much as most cars burn a little oil. any help would be appreciated.

How many miles on your Century?

If you are using that much oil you should have visible signs. Any blue smoke coming out the exhaust? You may have problems with the lower intake manifold gaskets or mechanical wear such as piston rings or valve guide seals.

probably valve guide seals