repairs and keeping cost low?

A vehicle’s engine-cooling system serves not just to keep the engine cool, but to also keep its temperature warm enough to ensure efficient, clean operation. System components include a radiator to dissipate heat,

This was a very well-rounded vehicle for me, ahead of it's time in terms of design, performance capabilities, and creature comforts. Though I wouldn't buy another one solely due to reliability issues ranging from faulty electrical systems to costly engine/drivetrain issues which were very difficult and expensive to resolve even for BMW mechanics.

Oil changes may be more expensive with the required 0W-20 weight oil compared to conventional oil, but only having to service the car once or twice a year keeps annual costs to nearly a wash.

Actually, there is no such thing as a tuneup in the traditional sense of replacing parts to bring the ignition and fuel systems up to specs for maximum performance and efficiency 

No, you don't, according to every auto manufacturer we've talked to. The main advocates of the 3,000-mile oil change schedule are those who would profit by it