Anyone recall what they last paid to have their friendly, local Ford dealer flush their transmission? I guess they use a machine that cleans out everything including the torque converter and cooler--that true?
My friendly local shop has a mechine that flushes the tranny. It's one of the first things I have done when I buy a used vehicle. They keep flushing fluid through the system till it cleans out. Don't remember how much it costs but I'd rather pay the money to flush instead of rebuild in a couple thousand miles.
Gnarvan 1992 E350 Clubwagon
Advanced 4WD Systems Conversion
Sotar Legend 12.5' X 22" Cataraft
2003 BMW R1150GS-Adventure
2013 BMW R1200GS-Adventure
I just drain the pan and refill and replace the filter every 30K.
SOLD04 EB350 Custom Floorplan
6.0 PSD 4.10 Posi
Salem Kroger coil spring 4wd
SMB Trailer w/AT Air Suspension
Alaska to Key West, Labrador and more
130685 miles 16.65 mpg average
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2015 VW GTI
Leaving CA for WA
You can accomplish the exact same thing by aiming the trans cooler hose into a 5-gallon bucket. Start the van to pump about 6 qts (it comes out quick!), turn off and add 6 qts to the dipstick, and repeat 2 more times. That will effectively exchange out all the fluid, and really does it in same fashion as the diaphram machine at the Ford dealers. Stay away from high-pressure or reverse flush machines (these can blow out seals), especially from ATF recycling machines (you end up getting some of every type of ATF back in your rig).
Dropping the pan is nice you see what in the bottom. But at the same time maybe you don't want to know. Last time my pan was dropped was 175,000 miles ago. Since then I've done the bucket thing twice, once for 6-qts and finally did a full 18-qt exchange not too long ago.