[DeTomaso] Cleaning rust out of the console heater tubes

[Garth Rodericks]

Get one of these dryer vent cleaning brushes and chuck it into your drill, then drive it through the tubes spinning away. That should remove any loose rust and scale.
http://www.rewci.com/dryerventclean.html

Another variation:
http://repair2000.com/brush.html

These boiler brushes may be more up to the task, but you will need a shaft to mount them onto:
http://www.giind.com/FlexibleShafts/Brushes.html
http://www.schaeferbrush.com/FlueProducts.html
http://www.grainger.com/Grainger/items/2XTA8?cm_mmc=Google%20Base-_-Cleaning-_-Equipment-_-2XTA8
http://precisionbrush.org/Item/TW14B.htm
http://www.trentmfg.com/a8.htm

I've thought of doing the same thing to my car while the engine is out too.

Cheers!
Garth