Reply With QuoteI wouldn't do that. Auto trannies rely on pressure. Disconnecting a
cooler line will definitely do funky things to her internals with the
sudden drop in pressure. Why not d/c the lower line on the cooler to
get what you can out of that? The bulk of the fluid you replace with
the flush/change will be synthetic. The remainder of dino-fluid will
be small.
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Chevrolet: Transmission Flush Procedure
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- 08-05 01:38 AM #1ThaGuest
Transmission Flush Procedure
Having just flushed my coolant system on my 2005 Malibu at $63K miles,
I now would like to do the same with the transmission. I would like to
remove as much of the old fluid as possible. Since dropping the pan
will only remove a portion, I am trying to devise a plan to remove all
or nearly all of the fluid rather then a portion. I am wondering if I
can possibly disconnect one side of the transmission cooler line and
let the transmission pump force all or most of the fluid from the
torque converter, lines, pan etc.? Would doing this damage the
transmission? Anyone got an alternative way to accomplish this? Would
compressed air force the fluid from the system? I am also
contemplating replacing the fluid with AMSOIL Synthetic Automatic
Transmission Fluid. Anyone have any pros or cons on this idea? Since
there is a good chance there might be some small amount of the former
fluid left over somewhere in the system, would the AMOSIL mix cause
any problems? Would be most interested in any success or horror
stories in doing this project. Thanks in advance for any info you
might share.
Tha RagMan
- 08-08 05:20 PM #2madmedix@gmail.comGuest
Re: Transmission Flush Procedure
- 08-08 10:53 PM #3ThaGuest
Re: Transmission Flush Procedure
On Fri, 8 Aug 2008 10:20:20 -0700 (PDT), "com"
<com> wrote:
madmedix;
Thanks for the response, info and advice. Let me see if I understand
correctly? You are suggesting that I open the cooler lines and let
what will freeflow out from there? I assume that I should also drop
the pan and drain it as well. That pretty much leaves only the fluid
in the torque converter. Would the amount of new fluid I am able to
fill be adequate to consider this a reasonably decent flush of the
fluid? I am attempting to accomplish the best fluid exchange I can
without having to resort to relying on a dealer. I am open to any
advice and/or suggestion on getting a decent trans flush. Thanks again
for your help and info.
Tha RagMan
- 08-11 12:54 AM #4RoyGuest
Re: Transmission Flush Procedure
A wise dealer (like the one I use) only drops the pan and changes the fluid.
Many people I know (my father included) has had tranny problems after one of
the flush procedures. The reason is the flush equipment uses the cooler
lines and applies higher pressure than is normally present, which blows out
seals and starts leaks.
Roy
"Tha RagMan" <net> wrote in message
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- 08-11 11:52 AM #5ThaGuest
Re: Transmission Flush Procedure
On Sun, 10 Aug 2008 19:54:33 -0500, "Roy Bragg" <net>
wrote:
Roy Bragg;
Thanks for the response and good info. I to have heard horror stories
about problems from back flushing and have decided to also only just
drop the pan and replace the filter. I am considering disconnecting
the cooler lines to allow any fluid that might free flow to escape.
Also using compressed air to force out any remaining fluid in the
cooler only. I'm sure it will probably be minimal but I want to
eliminate as much as I possibly can safely. I realize this will not
purge all the old fluid but my feeling is that replacing as much as I
remove will at least better my odds of extending the life of the
transmission more then simply doing nothing. If anyone has an
alternate way of removing more or all fluid I and others in this group
would sure be interested in hearing how you were able to accomplish
it. Thanks to all for your info and responses.
Tha RagMan
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