Just thought I'd post about a good experience with the dealer today. I called around town for a tranny flush and filter change, and ended up taking it the dealer here in town. They used a Mopar Kit p/n that includes the filter and tranny fluid (so it seems). Anyway, I took it in this morning and it was done in a little over an hour, for $134.00 out the door. Great service and a fair price at Glenn Thomas Dodge in Long Beach. Had a little while I waited.

 

Are you sure they flushed the tranny? Sounds like all they did was change the filter and add fluid.

 

Dont flush your tranny ,EVER ,just change fluid and filter.....


Rooster

 

What he said....

 

Why are you not supposed to flush your tranny? I thought thios was the preferred method.
D

 

Why would you flush it ,is the question? My owners manual,maintaince manual doesnt call for it.But unless done the one exact way(pull pan ,change filter,replace pan,fill with fluid,remove cooler return line,place hose on line,put end of hose in bucket,have one person start truck and place tranny in neutral,have one person watch hose under truck,have one person add fluid as old fluid is draining)This is the only correct way to flush a trans,and it takes about 10qts more fluid than a reg filter service.Most shops use a trans flush machine,IT WILL LEAVE PARTICLES IN YOUR VALVE BODY WHICH WILL DESTROY YOUR TRANSMISSION....Your trans was not designed to be flushed.All it needs is regular fluid/filter change.Anyone that tells you otherwise just wants your money. NEVER LET ANYONE FLUSH YOUR TRANS WITH A MACHINE,EVER

Rooster

 

Can't agree more. DO NOT LET ANYONE "FLUSH" your auto tranny, or you might have to "FLUSH" about 2-4 grand down the drain with it.

Remember your auto trans is made up of valve bodies and channels and a lot of other crap. When a dealer, spiffy lube, etc "power flushes" your tranny all of this little particles (like rooster said) can clog up the channels and pathways for trans fluid in the transmission. This can and will lead to a transmission failure.

I get my auto trannys fluid changed every 30K. This involves, removing the pan, draining the fluid and changing the filter. Then I fill the trans back up and away I go. Yes, I understand not all of the fluid gets changed this way, but I have not had an auto trans failure yet in any of my trucks.

 

Where exactly are these killer particles coming from? They are not coming from the fresh ATF that is going in as the old ATF is coming out. The name tranny flush is a misconception. It is a fluid exchange. I'm sorry, but I don't agree.

I don't understand, can you explain in laymens terms... With a statement like that, your post looses all credibility.

It is not a power flush. The new ATF that is put in is not being forced. It is being added at the same level as it is being removed through the NORMAL cycling of the transmission fluid. it is not being forced/pressurized through the system. It takes a while to do on The 48re, because of the large amount of ATF required.

 

I beg to differ on the flush machine aspect. Yes I do work as a tech at a "steal...errrr dealership" and yes we have a flush machine (actually 4 of them). In the 8 years or so that we have been using them I know of ONE trans that went south, and it turned out it cracked an iron seal ring on the front pump. I have never seen or heard of a VB getting contaminated from using a flush machine, and how would it? Our setup (wynns) simply loops into the cooler circiut, old fluid gets pumped out by the vehicle into a suitable drain and the machine replaces what gets pumped out. Unless someone is using flushing equipment thats already contaminated/dirty I fail to see how it would fubar a VB.

 

My problem with a flush is that the "DIRTY" filter is still in the TRANNY!!!!!!

Unless you are "back flushing", which would reverse the flow of the fluid to "clean" the filter, and allow the trapped dirt to become "free" again, but I don't know of any machines that do it that way.

But all flush machines leave the old "DIRTY" filter and "DIRTY" bottom of the pan in the trans.

 

From first hand experience on my dads Grand caravan. He took it in for service and the dealership somehow convinced him to have his tranny flushed. Now, he never had one prob with the way it shifted until about a month or so after the flush and well it messed up the tranny. My neighbors wife with 52k miles on her expedition who never had one prob with their tranny had some idiot at the quik lube place (JiffyLube) convinced her to have her tranny flushed after her oil change. My neighbor comes over and askes me to ride with him as his wife was complaining on the way her Exp. was driving. We go for a ride and find the tranny fubar. She forgot to tell her husband that she had the tranny flushed. Big mistake. It was so bad that he ended up buying a remanufactured tranny from Ford instead of a rebuild. End of rant but I would NEVER< NEVER, NEVER have my tranny "flushed".......

 

The particles come from break in,clutch discs etc.Ive told you why I wouldnt flush now You can tell us why You would.Why would any one want to change fluid and leave a dirty filter in their trans? What does it benefit me by flushing my trans?How many Ford drivers have you charged to flush when all that has to be done is remove drain plug in tc? Like I said,what benefit do I receive from flushing my trans?

Rooster

 

Rooster, I agree w/ you 100%

 

I do a full fluid replacement on almost every trans I do at work.

Most customers don't do it when it is required so fluid is dark.

I always change the filter and clean pan first. Top it off. Then drop the outlet cooler line in an empty bucket. Start the engine and fill the trans. until the outlet oil is clean. Reinstall the cooler line and top off system.

How will that cause crap to get in the valve body?

I think you are all Sheep who believe internet machanics.

Just think about it.

....but what the hell do I know...... I'm just a dumb drivetrain shop owner.....

 

Im not calling you dumb but maybe you should read all the posts before calling me an internet mechanic there buddy.