Originally Posted by Boozer76
I don't know if maybe a dealer has a proper machine for a diesel, but I can assure you the only machinery they typically use for most vehicles is a garden hose. And you'll probably not find distilled water anywhere on your bill either. I do agree if you have the gold it should be flushed routinely and continue to do so if you stay with the gold.
Mitch is referring to the trans flush not the cooling system flush. Dealers have equipment that can heat up the trans oil to open the trans thermostat and hence get a full/thorough flush. For those of us who try to drain and replace at home, usually dropping the pan will only get you 8 to 10 quarts unless you drain, replace, drain replace. Because my truck is used mainly for heavy/hard hauling, I drain via the pan every 5k- 10k miles, replace the 8-10 quarts and then have the dealership do a full system flush every 25k or so. Perhaps overkill but I'd rather pay the coins for maintenance than for a trans rebuild.