Thread: To flush or not to flush!

When a flush is done, the trans lines are hooked to a machine that puts new in and contains the old fluid. Frequently the filter is not changed during this process because that would mean dropping the pan and replacing the fluid that was just put in.

Dropping the pan (or called trans service) is dropping the pan. In the 13 quart system about 7 drain out with a pan drop. The filter is replaced and the pan back on, then refilled.

The myth behind flushes being bad is from folks that didn't touch the trans fluid until the car exhibited a problem. Then they get a flush and the problem doesn't get better.

I prefer the pan drop because it requires no special tools, can be done reasonably low cost by the average joe and a clean filter is put in place. Filters are important.

On the interval, 30K miles or less. I service once a year. Keeps the internals nice and clean. Your recommended oil change interval is high as well and if you change your oil at the recommended interval, your internals of your motor will be filthy and sludged.