1997 Corolla oil problem

Hi.... I have a 1997 Toyota Corolla CE with a 1.6 litre engine. It burns oil all of the time no matter what I do to it. It has 126,800 miles on it. There was a point where the previous owner did not change the conventional oil for 17,000 miles. I changed it at 81,000. I have tried 5W-30 and 10W-30 in it to stop the burning. No difference. Someone told me to use 20W-50 in it and another person suggested 0W-20. This is going to drive me nuts to keep on having to put a qaurt in every 700 miles. Is there someone who knows what weight I should try?


thanks in advance