I'm just trying to figure out that after driving the car for so long and checking the oil frequently, I don't smell a burning, nor do I see a SIGNIFICANT decrease on the dipstick, but I'm scared because I do see a SLIGHT decrease...should I try an oil change and a bottle of lucas stabilizer?

1998 Mercury Mystique LS - Looking for SVT EXHAUST, SVT Rear bumper (silver frost) and ANY rocker mouldings (side skirts)