Trans Flush vs Pan Drop

1300ZUK · **Posted:** Wed Dec 27, 2006 11:36 pm

whats the consensus around here on the advantages or disadvantages?

Jeepjeepster · **Posted:** Thu Dec 28, 2006 12:17 am

with a pan drop, you only get around 4 quarts of the fluid. I think the tranny has around 12 quarts total? With a flush, you get all that.

raceinfan · **Posted:** Thu Dec 28, 2006 6:46 am

tranny flush just takes care of the fluid NOT THE FILTER,so you have clean fluid & dirty filter still

I say pan drop change the filter & not worry about it

LiLredLibby · **Posted:** Thu Dec 28, 2006 11:03 pm

Where I work,our trans. flush machine pulls out the old fluid,then you drop the pan,install new filter,refill with new fluid and flush chemical.Run about 10 to 15 minutes.Machine pulls all 10 to 12 quarts out and replaces with all new fluid and friction addative.It's kind of expensive but a lttle more effective.

psinsyd · **Posted:** Thu Dec 28, 2006 11:21 pm

Just remember to use ATF+4 w/ no friction modifier or additives.

LiLredLibby · **Posted:** Thu Dec 28, 2006 11:41 pm

Thats true....I was speaking in general of most other vehicels such as Ford,Gm,etc...DC has always had shutter problems since the caravan days and thats why they came out with +3 and now +4, It is blended with friction modefiers to correct shutter.

sleeve84028 · **Posted:** Fri Dec 29, 2006 12:18 am

My thoughts are what follow... Nothing more...

30 years ago, the Muscle car was king. This was the era of big engines and straight line races, but when it came to maintanence every mechanic (including the do it yourselfers) dropped the pan and changed the filter and fluid. Up until around 10 years ago eveyone was still dropping the pan and changing a filter. So for the last 30 years, millions of cars have been running 100's of thousands of miles without needing repair and never had all of the fluid changed. But along comes this miracle machine...

Now, with the transmission flush, 100% of the fluid in the transmission fluid gets exchanged which is good. Things like the torque converter rely on transmission fluid to operate properly. In fact, one could even argue that if you change the fluid in short enough intervals that all of the metal particles could be transfered out of the filter and still keep the trans fluid flowing through the filter without too much resistance thus never needing a filter change.

Now, there are certain situations where changing the fluid in a transmission is going to cause more problems... These situations, are when the fluid hasn't been changed ever and it's so burnt that you can smell it before the stick comes out of the tube. Removing the fluid with all of those particles in it can actually remove the material that is holding clutches together - resulting in a slipping transmission and leading to some big repair bills.

So what am I getting at? Well I would probably flush the fluid the first time, change the filter at 60K miles and then repeat.... but everyones situation is different.

Trans Flush vs Pan Drop

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