Procedure for changing transmission fluid

I tried to drain the auto trans fluid and refill it, but it goes back to
dirty for a short time, say 2 months. Is any specific procedure for changing
the fluid? I heard someone saying that I need to wash the transmission by
the new transmission fluid for a few times, how?

Thanks in advance
Sam

On Wed, 04 Oct 2006 23:51:52 +1000, Samuel wrote:
[color=blue]
> I tried to drain the auto trans fluid and refill it, but it goes back to
> dirty for a short time, say 2 months. Is any specific procedure for changing
> the fluid? I heard someone saying that I need to wash the transmission by
> the new transmission fluid for a few times, how?
>
> Thanks in advance
> Sam[/color]

You don't say what model (really not that important) or How many miles
(REALLY IMPORTANT!)

If it is a newer car and has had somewhat routine service, you can try
having the transmission flushed. Some say, if the trans has been serviced
regularly this is OK, but I still shy away, since they use a base of
DexronII-Mercon with 'modifiers' for other types like Chrysler ATF+3 or +4.
Not my idea of a good job...I have also personally seen two older Escort
trannies go belly up after being flushed, having never had service before.

There are about 12-16 QTS of fluid. Changing out 3-4 at a time at least
gets fresh fluid in there, and replenishes the friction modifiers and
detergents.

If you're really nervous about it, drive for 3-7,000 miles, and do it
again! It will take about 5-6 changes to change out about 50% of the
tranny fluid.

A word: If your transmission fluid is BLACK, it is probably NOT a good
idea to change too much of it at once. See that Black stuff? THAT is
mostly what is providing the friction for the car to move!!!

My car is 2004 Corolla 1ZZ-FE engine, I am a driving instructor, so I've
already driven the car for 120000km within 2 years!!

"Hachiroku" <Trueno@ae86.gts> ???????:ECQUg.1763$We.636@trndny08...[color=blue]
> On Wed, 04 Oct 2006 23:51:52 +1000, Samuel wrote:
>[color=green]
>> I tried to drain the auto trans fluid and refill it, but it goes back to
>> dirty for a short time, say 2 months. Is any specific procedure for
>> changing
>> the fluid? I heard someone saying that I need to wash the transmission by
>> the new transmission fluid for a few times, how?
>>
>> Thanks in advance
>> Sam[/color]
>
> You don't say what model (really not that important) or How many miles
> (REALLY IMPORTANT!)
>
> If it is a newer car and has had somewhat routine service, you can try
> having the transmission flushed. Some say, if the trans has been serviced
> regularly this is OK, but I still shy away, since they use a base of
> DexronII-Mercon with 'modifiers' for other types like Chrysler ATF+3 or
> +4.
> Not my idea of a good job...I have also personally seen two older Escort
> trannies go belly up after being flushed, having never had service before.
>
> There are about 12-16 QTS of fluid. Changing out 3-4 at a time at least
> gets fresh fluid in there, and replenishes the friction modifiers and
> detergents.
>
> If you're really nervous about it, drive for 3-7,000 miles, and do it
> again! It will take about 5-6 changes to change out about 50% of the
> tranny fluid.
>
> A word: If your transmission fluid is BLACK, it is probably NOT a good
> idea to change too much of it at once. See that Black stuff? THAT is
> mostly what is providing the friction for the car to move!!!
>
>[/color]