[JL8Jeff]

I've never had a trans flushed, I just drain, change the filter and gasket and refill. Never had any problems. If your car has been flushed at regular intervals then it's a great idea to keep up with it. But if it's never been flushed and it's higher mileage, I wouldn't flush it. There could be debris hidden safely in corners that will suddenly get moved around with a flush. Then if it ends up clogging something the tranny is toast. Just do the drain and refill. Yeah, there will be some old fluid left in the TC but it's not that big of a deal. If you're really bored, then drain it again after driving it around to mix it completely. Believe me, you won't want to drain and fill it twice.