I have a 1997 Plymouth Breeze with a mileage of 220,000.How long will it last?

I got it from a dealership about a 14 months ago. When i first got the car it was at 202,000 now its at 222,000. I didn't really put mileage on the car except for the past two months which totaled about 4,000. I commute back and forth to school but i really don't use the highway that often. I had to get ball joint and tire axel rods done. When i noticed a little change in the transmission i put some trans x and its worked miracles. I take it to the shop every three to four months to make sure there is nothing wrong with my car. The only bad problem is that it has an oil leak, but i mainly fixed it with Lucas. I want my car to last until December of 2010. Will it last that long?