Hi, I'm new here and had a few questions about the scheduled maintenance on doing a transmission flush and radiator flush. If I'm tight on money right now, how long can I drive before absolutely needing to do this flush? I'm about 82,377 miles in and want to put it off as long as I can. I have a 2006 6 speed Mazda RX8

 

Which 6-Speed RX-8? Automatic or Manual? If the former, then change the transmission fluid (do NOT do a flush, just drain and refill), if the latter, change it when you can, but no real rush.