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-   -   transmission flush - will those flush machine do the trick? (http://www.peachparts.com/shopforum/tech-help/183326-transmission-flush-will-those-flush-machine-do-trick.html)

Kim Langley2 04-17-2007 05:28 PM

There is a DIY article for transmission fluid changes on this site

engatwork 04-17-2007 10:15 PM

On the MB's I drain the torque converter and drop the pan BUT the '97 Honda CRV is another matter. Up till about 150k miles I would take it to the Honda dealer and have them do the tranny fluid flush (I do not own a tranny flush machine). Now at 210k miles I just drain it and refill it. On this particular application you are unable to drain the torque converter and there is no filter to change that I know of. Tranny still works fine although it does shift a little harder than it did new.

Hirnbeiss 04-17-2007 10:31 PM

Quote:

Originally Posted by engatwork (Post 1482980)
On the MB's I drain the torque converter and drop the pan BUT the '97 Honda CRV is another matter.

Yeah, those little motorcycles probably only hold a pint or two anyway.;)

Arthur Dalton 04-17-2007 11:17 PM

The reason it is so important to change the filter on an auto tranny is b/c there is constant wearing of the clutch paks and the aluminum sliding parts ..and where do you suppose these worn off debris wind up ??? .. in the filter.
The suction guys will tell you it winds up suspended in the fliud ..it does..and then the fluid just carries it to the filter.
When changing a trans fliud/filter, I open up the old filters so I can get a look at the clutch debris and aluminum wear content..this gives an insight to tranny wear ..if you ever opened one up, you would see why you want to change it..new fluid can not go through an old filter any better than the old fluid could..a blocked filter restricts oil flow and that is the last thing you want happening inside your trans..you are better off with a new filter and the old fluid than you are with new fluid trying to go through an old clogged filter...
Change them both and clean out the pan while you have it off...they can agitate all they want, they don't get the crud out of the corners of the pan like you can with it off. Do it right..trannies biggest problems are DIRT caused !!!

slojoexxx 04-17-2007 11:43 PM

Thanks for the link and the great read... I was thinking the same thing about the 60 minutes report... Just remember what your grandpa use to say, Funny thing about history, it seems to repeat it self...
Hello 60 minutes, have I got a story for you... HAHAHAHA

gmercoleza 04-20-2007 03:14 PM

All I will say is stay away from those flushing machines. Just get under there, drop the pan, and replace the filter and gasket. The machines are either a gimmick or designed to let the tech change your fluid with as little effort as possible.

300B 04-20-2007 04:09 PM

Quote:

Originally Posted by Arthur Dalton (Post 1483047)
The reason it is so important to change the filter on an auto tranny is b/c there is constant wearing of the clutch paks and the aluminum sliding parts ..and where do you suppose these worn off debris wind up ??? .. in the filter.
The suction guys will tell you it winds up suspended in the fliud ..it does..and then the fluid just carries it to the filter.
When changing a trans fliud/filter, I open up the old filters so I can get a look at the clutch debris and aluminum wear content..this gives an insight to tranny wear ..if you ever opened one up, you would see why you want to change it..new fluid can not go through an old filter any better than the old fluid could..a blocked filter restricts oil flow and that is the last thing you want happening inside your trans..you are better off with a new filter and the old fluid than you are with new fluid trying to go through an old clogged filter...
Change them both and clean out the pan while you have it off...they can agitate all they want, they don't get the crud out of the corners of the pan like you can with it off. Do it right..trannies biggest problems are DIRT caused !!!

The filter used on most if all trannys are merely just screens.
I've seen a pic of a 722.6 filter cut open with 130K that was pretty spotless.

If pretty much any transmission filter gets clogged the tranny is pretty much screwed!

Arthur Dalton 04-20-2007 04:18 PM

<<The filter used on most if all trannys are merely just screens.>>


Wrong..Benz uses mostly fibre element filters


<<I've seen a pic of a 722.6 filter cut open with 130K that was pretty spotless.>>

..and I have seen hundreds that were not..which is why Benz Maint/Tech specs that they be changed. No pictures, just real time filter from the car...

<<If pretty much any transmission filter gets clogged the tranny is pretty much screwed!>>

Yup. That is why we change them....so they don't get to that point.

300B 04-20-2007 07:33 PM

Quote:

Originally Posted by Arthur Dalton (Post 1485823)
<<The filter used on most if all trannys are merely just screens.>>


Wrong..Benz uses mostly fibre element filters


<<I've seen a pic of a 722.6 filter cut open with 130K that was pretty spotless.>>

..and I have seen hundreds that were not..which is why Benz Maint/Tech specs that they be changed. No pictures, just real time filter from the car...

<<If pretty much any transmission filter gets clogged the tranny is pretty much screwed!>>

Yup. That is why we change them....so they don't get to that point.

:sultan:

The fiber mesh MB uses is about as effective as a screen(over a 100 micron filter).

Tranny filters are very free flowing(they need to be),if a filter gets clogged it ain't debris it's the tranny in pieces.Screwed!

Arthur Dalton 04-20-2007 07:52 PM

..you certainly seem to know the proper care and feeding of your tranny....

http://www.peachparts.com/shopforum/tech-help/182279-installed-non-mb-atf-into-my-722-6-a-post1450355.html#post1450355

300B 04-21-2007 08:44 AM

Been over 2.5k miles with the new atf,no problema at all.

BTW,you know MB does not recommend changing the simple mesh filter on the 722.6 right.:dizzy2:

Arthur Dalton 04-21-2007 09:26 AM

Yes , we know that ...you do know what a problem that tranny was , I am sure.

300B 04-21-2007 10:31 AM

Quote:

Originally Posted by Arthur Dalton (Post 1486426)
Yes , we know that ...you do know what a problem that tranny was , I am sure.

I actually think it's a pretty good tranny actually.There are many high mileage units out there.

Arthur Dalton 04-21-2007 11:23 AM

Quote:

Originally Posted by 300B (Post 1486454)
I actually think it's a pretty good tranny actually.There are many high mileage units out there.

Good.. I hope yours joins those other high milage units. It is your car and you can certainly service it as you wish, regardless of conventional thinking.
Good Luck and have a nice day........


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