The 78 Camaro is currently at the garage. It's there for an oil change, trans fluid change and quotes on a lot of various things it needs. The mechanic wants to know if I want the trans fluid <i>flushed</i> or just <i>changed</i>. I've heard that flushing an older transmission can cause major problems. Of course he's all for the flush, since that'll add $99.99 to the cost. I said I'd call him back asap. What would you do?