two tranny fluid reservoirs

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Old 29 Sep 2005, 01:18 am   #1 (permalink)
mike
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Default two tranny fluid reservoirs

hey,

i did a search with after getting some meager info from my wife on this
topic and found nothing. sorry if this question has been asked and answered.

my wife inherited a 94 camry. classic little old lady only drove it to
church on sundays type automobile.

it's the 4 cy, FWD, four door sedan.

11 year old car, 36k on it. it has sat for a 2-3 years. we had a bunch of
routine maintenance done at a local, trusted shop. it has run well for about
a year now.

she just had it detailed and added some pin stripes (the car looks almost
showroom floor new) and someone she works with was admiring it and told her
this vintage camry has two reservoirs for transmission fluid - one is filled
from under the hood and the other is filled from under the car?

i rule nothing out when it comes to cars.

if this is fact, can someone enlighten me on it? should the undercarriage
transmission reservoir (if it exists) be checked every 3-5k when the oil is
changed like we check the tranny fluid under the hood every 3-5k?

if this is real, why was it engineered in such a weird way? what is the
purpose. i know this is a front wheel drive. is it related to that?

thanks,

mike


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Old 29 Sep 2005, 01:50 am   #2 (permalink)
johngdole@hotmail.com
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Default Re: two tranny fluid reservoirs

An outdated design that lasted too long. From the old days when trany
and axle are separate. They are eliminating it so they don't have to
use both gear oil and ATF. They all use ATF now.

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Old 29 Sep 2005, 07:16 am   #3 (permalink)
qslim
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Default Re: two tranny fluid reservoirs

On those older models the transmission itself is filled through the
dipstick, and the differential is filled from the bottom. They both use
ATF, and it is a good practice to change both when servicing the
transmission, although you will need a fluid pump of some sort to fill the
diff from the bottom.

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Old 29 Sep 2005, 11:57 am   #4 (permalink)
Daniel
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Default Re: two tranny fluid reservoirs

The second "transmission fluid" reservoir is the differential.
Good that you asked. It is often overlooked.
There is a separate drain plug, and separate fill plug up on the side
of the housing in back.
Draining is fairly straightforward, the Haynes repair manual though not
as definitive or complete as the factory service manuals, is quite
inexpensive and has a photograph of the differential drain and fill
plug locations.
The easier way to refill the differential housing is to use a 1/2" O.D.
plastic hose about 2 ft. long, with a funnel, and just pour in the
Dexron type fluid from above. (1.7 quarts - until it begins to drip out
of the fill plug)
Some may call it an outdated design, and it is true they don't build
them like this anymore, but there are some advantages.
The transmission fluid both lubricates the gears, and also must allow
the friction surfaces of the clutch plates to grip. Wear of the
transmission clutches over time does contaminate the fluid. With a
separate differential, the fluid stays clean much longer.
After the initial drain, when it had been neglected by the prior owner,
every time I have drained the differential fluid in connection with
service, it has come out looking just like it went in, although I have
been using the Mobil 1 fully synthetic ATF, so that may be a factor
also.
Point is, the differential fluid does not need to be changed as often
as the transmission fluid. The capacity of the transmission is 5.9
quarts. Drain and fill is apx. 2.5 quarts. If you do your own, and let
it drain overnight, will take apx. 3.5 quarts. Either way, to keep the
transmission fluid clean - which is the best way to keep your
transmission trouble free, you need to change it more often than the
differential fluid.
Those are great cars. Tell your wife to appreciate and enjoy it.

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Old 30 Sep 2005, 02:36 pm   #5 (permalink)
tbober
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Default Re: Re: two tranny fluid reservoirs

"" wrote:
> The second "transmission fluid" reservoir is the differential.
> Good that you asked. It is often overlooked.
> There is a separate drain plug, and separate fill plug up on
> the side
> of the housing in back.
> Draining is fairly straightforward, the Haynes repair manual
> though not
> as definitive or complete as the factory service manuals, is
> quite
> inexpensive and has a photograph of the differential drain and
> fill
> plug locations.
> The easier way to refill the differential housing is to use a
> 1/2" O.D.
> plastic hose about 2 ft. long, with a funnel, and just pour in
> the
> Dexron type fluid from above. (1.7 quarts - until it begins to
> drip out
> of the fill plug)
> Some may call it an outdated design, and it is true they don't
> build
> them like this anymore, but there are some advantages.
> The transmission fluid both lubricates the gears, and also
> must allow
> the friction surfaces of the clutch plates to grip. Wear of
> the
> transmission clutches over time does contaminate the fluid.
> With a
> separate differential, the fluid stays clean much longer.
> After the initial drain, when it had been neglected by the
> prior owner,
> every time I have drained the differential fluid in connection
> with
> service, it has come out looking just like it went in,
> although I have
> been using the Mobil 1 fully synthetic ATF, so that may be a
> factor
> also.
> Point is, the differential fluid does not need to be changed
> as often
> as the transmission fluid. The capacity of the transmission is
> 5.9
> quarts. Drain and fill is apx. 2.5 quarts. If you do your own,
> and let
> it drain overnight, will take apx. 3.5 quarts. Either way, to
> keep the
> transmission fluid clean - which is the best way to keep your
> transmission trouble free, you need to change it more often
> than the
> differential fluid.
> Those are great cars. Tell your wife to appreciate and enjoy
> it.


I think, and I could be wrong again, but letting it drain overnight
does not make any difference. Because? The torque converter wonít
drain? The only way to drain that completely is to take it out which
NOBODY EVER does because that would be silly and VERY expensive? Some
people do a flush. I just use the best synthetic available. AND, I
make sure itís the right type, because there are many. The wrong type
can wreck your tranny. I use AMSOIL ATF - Synthetic Universal
Automatic Transmission Fluid (not the racing variety) at $8 a bottle.
See: http://www.amsoil.com/StoreFront/atf.aspx

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Old 01 Oct 2005, 03:47 am   #6 (permalink)
hbuck
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Default Re: Re: two tranny fluid reservoirs

>by tbober <UseLinkToEmail@AutoForumz.com> Sep 30, 2005 at 02:36 PM


>>Daniel wrote:
> > The second "transmission fluid" reservoir is >>the differential.
> > Good that you asked. It is often overlooked.
> > There is a separate drain plug, and separate >>fill plug up on
> > the side
> > of the housing in back.
> > Draining is fairly straightforward, the
> >Haynes repair manual
> > though not
> > as definitive or complete as the factory service manuals, is
> > quite
> > inexpensive and has a photograph of the differential drain and
> > fill
> > plug locations.
> > The easier way to refill the differential housing is to use a
> > 1/2" O.D.
> > plastic hose about 2 ft. long, with a funnel, and just pour in
> > the
> > Dexron type fluid from above. (1.7 quarts - until it begins to
> > drip out
> > of the fill plug)
> > Some may call it an outdated design, and it is true they don't
> > build
> > them like this anymore, but there are some advantages.
> > The transmission fluid both lubricates the gears, and also
> > must allow
> > the friction surfaces of the clutch plates to grip. Wear of
> > the
> > transmission clutches over time does contaminate the fluid.
> > With a
> > separate differential, the fluid stays clean much longer.
> > After the initial drain, when it had been neglected by the
> > prior owner,
> > every time I have drained the differential fluid in connection
> > with
> > service, it has come out looking just like it went in,
> > although I have
> > been using the Mobil 1 fully synthetic ATF, so that may be a
> > factor
> > also.
> > Point is, the differential fluid does not need to be changed
> > as often
> > as the transmission fluid. The capacity of the transmission is
> > 5.9
> > quarts. Drain and fill is apx. 2.5 quarts. If you do your own,
> > and let
> > it drain overnight, will take apx. 3.5 quarts. Either way, to
> > keep the
> > transmission fluid clean - which is the best way to keep your
> > transmission trouble free, you need to change it more often
> > than the
> > differential fluid.
> > Those are great cars. Tell your wife to appreciate and enjoy
> > it.


>tbober wrote:
>I think, and I could be wrong again, but letting >it drain overnight
>does not make any difference. Because? The >torque converter wonít
>drain? The only way to drain that completely is >to take it out which
>NOBODY EVER does because that would be silly and >VERY expensive? <snip>



The first time I drained my 2000 Camry,4 cyl, I was suprised after about
an hour that there was still a small steady stream. I let it go a couple
more hours and it was still dripping pretty good. But I put the plug back
on and poured it all into some empty bottles and it was about 3.5 quarts.
I had to go buy another quart.
BTW, 2000 has seperate differential too.











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