oil problem

So i moved to oklahoma about a 2 weeks agon and on my way up my check oil light came on. I thought this was strange since my car has never been low before so i checked it and it was a quart low. Filled it up got on the road stoped to fuel my car after 200 miles and it was a quart low again. Now ever 200 miles the thing is a quart low? Whats the deal guys? iv never ever been low as long as ive owned the car. I keep checking my parking spots for puddles on the ground and nothin! And it doesnt appear to be leakin from valve covers or anything wheres it goin? I even thought maybe it was burning it but usually you can smell it and i cant. So once again i need your guys help any ideas would be AMAZING!

THANKS
Anthony

Checked my pvc stuff all looks good. Someone mentioned to me maybe changin my spark plugs? Im usein split fire platnium ones right now its what i always used in my 97 and they worked fine but what does my spark plug have to do with burning oil? O and this is all on 91 gt just to fill you in.

i havent but i didnt realize there was one down there what will that do for me?