Hello, I have a 1978 Buick Regal with a 3.8l 231cc Buick V6 and 150,000 miles on it. I'm facing some costlyish repairs (tires, shocks, muffler, brakes) and I guess I'm wondering in the long run how much money its worth sinking into the car. I'm guessing some people here have had some experience with this type of car and with the type of engine, and might know how long they tend to last. One person has told me I'm lucky its lasted as long as it has, another says they last forever. The engine still as good pickup and sounds smooth, although it leaks a fair ammount of oil (about 1 qt every 300 mi- I suppose it might burn as well but I've never noticed any smoke).
Also, seeing as the car is something of an antique, is it something anyone would bother restoring? I'm guessing no, but thought I'd ask. The interior is pretty nice still, although the paint is pretty bad and there is a little rust around the rear wheels that has probably gone through.