[MBZ] OT: List wisdom re: Sub tranny flush

[Levi Smith]

To the best of my knowledge, changing fliud by hand is only going to change
about half the fluid (what's in the pan), unless there's a drain on the
torque converter.  So besides not getting nice clean fluid through the
cavities, you'll probably never get all the burned stuff out.  (though after
a few changes, one would think you might be up to a decent percentage)...

Levi

On 6/1/06, Rich Thomas <richthomas79TD300 at constructivity.net> wrote:
>
> Took my 2000 Suburban 102k miles in the other day for a recall fix (fuel
> sender wires or something), they did a general inspection (to get me to
> OK them having at it $$$, no doubt).  One of the points was that it
> needed a tranny flush (burned fluid).  Reasonable enough I suppose,
> though I did change the tranny fluid a year and half ago or so.  I know
> that does not get the TC fluid out, which continues to be old stuff.
> There was a bit of discussion on this flush technique a few weeks ago,
> sounds like an OK procedure.  I am wondering though, how the tranny is
> set up -- does TC fluid actually mix with the pan fluid in some fashion
> while operating?  Is draining/refilling a time or two a close enough
> approach to cleaning out the TC?  Tranny fluid is cheap enough compared
> to the flush cost ($50), seems like it might do pretty close if just
> cleaning the fluid is the main benefit.
>
> Thoughts?
>
> --R
>
>
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