That's about the only way I know. We've found a good mechanic at the local Shell store (highly rated in a local consumer survey), but they cost the same as the Buick dealer (they just do a much better job).

Of course, with an '84 there's probably more waiting to fail than just the engine. I know my '87 LeSabre is having lots of troubles (178,000 miles). The engine's fine except for the oil leaks, but the A/C leaks, it needs brakes, the passenger window comes out of its track, it's going to need an exhaust system (and catalyst) eventually, it's overdue for a timing chain and gears, it rattles a lot and the door seals are leaking, etc., etc. I plan on giving it to a charity in the next few months.

Unless the rest of the car (especially brakes, A/C, transmission) are in good shape, there comes a time in most cars lives when it's better to let it die and move on. It sounds like you made the right choice in getting a newer car.

Cheers,
Scott.