I have a 99 SL2 1.9 DOHC. It has used some oil ever since we bought with 60k. It has around 130k now, it is a short tripper, less than 10 miles a day. I usually use a quart in 800-1000 miles.
I currently use Mobil 1 High Mileage 10w30, it started fine 20 below zero last winter. It does consume less with High Mileage oil. I also did a MMO piston soak, let it sit all weekend. Also ran some MMO in the crank case for one oil change, consumption has reduced, not sure exactly how much. I may try a Kreen soak in the future to see if that helps further.
Don't junk the car, as long as you keep the oil topped off, it will run just about forever.