How often do you change your transmission fluid?

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Old 18 Nov 2006, 09:18 am   #1 (permalink)
Joe
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Default How often do you change your transmission fluid?

I don't know that much about cars and don't have a regular mechanic so
I just go to random service stations for oil changes every 3000 miles.
I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
and changed the transmission fluid. I haven't changed the transmission
fluid since -is my car doomed? How often do I need to change it? I've
also notice that people mention differential fluid - how often do I
need to change that? Are there any other fluids that I need to be
changing regularly that I'm ignoring?

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Old 18 Nov 2006, 09:23 am   #2 (permalink)
Joe
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Default Re: How often do you change your transmission fluid?

Oh I forgot to ask - is the transmission fluid easy to change yourself?
Is there a website that gives step by step directions?

Joe wrote:
> I don't know that much about cars and don't have a regular mechanic so
> I just go to random service stations for oil changes every 3000 miles.
> I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
> and changed the transmission fluid. I haven't changed the transmission
> fluid since -is my car doomed? How often do I need to change it? I've
> also notice that people mention differential fluid - how often do I
> need to change that? Are there any other fluids that I need to be
> changing regularly that I'm ignoring?


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Old 18 Nov 2006, 09:43 pm   #3 (permalink)
Wolfgang
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Default Re: How often do you change your transmission fluid?

You can drain about 1/3 of the fluid -- the other remains in the torque
converter so just change again at next (or one after) oil change. Cost for
fluid is mabe $8 --- far cheaper than a $150 flush! Directions on how to
check level are in the owners manual.

"Joe" <joe5345@gmail.com> wrote in message
news:1163863408.548354.225660@h48g2000cwc.googlegr oups.com...
> Oh I forgot to ask - is the transmission fluid easy to change yourself?
> Is there a website that gives step by step directions?
>
> Joe wrote:
>> I don't know that much about cars and don't have a regular mechanic so
>> I just go to random service stations for oil changes every 3000 miles.
>> I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
>> and changed the transmission fluid. I haven't changed the transmission
>> fluid since -is my car doomed? How often do I need to change it? I've
>> also notice that people mention differential fluid - how often do I
>> need to change that? Are there any other fluids that I need to be
>> changing regularly that I'm ignoring?

>



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Old 19 Nov 2006, 12:10 am   #4 (permalink)
johngdole@hotmail.com
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Default Re: How often do you change your transmission fluid?

The tranny pan has a drain plug, and there are drain and fill plugs for
the differential. Should take about 4-5 qts. Do both 12-15,000 miles
depending on your driving condition. I'd recommend changing the
strainer 24-30K miles and wiping clean the pan. The Fram ATF kit with a
cork rubber gasket is nice for about $20. BTW, the 90 may have a more
frequent strainer change schedule, don't know.

Here is an AutoZone page on the tranny. But cuoldn't find info on fluid
change.
http://www.autozone.com/servlet/UiBr...3d8013f464.jsp




Joe wrote:
> I don't know that much about cars and don't have a regular mechanic so
> I just go to random service stations for oil changes every 3000 miles.
> I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
> and changed the transmission fluid. I haven't changed the transmission
> fluid since -is my car doomed? How often do I need to change it? I've
> also notice that people mention differential fluid - how often do I
> need to change that? Are there any other fluids that I need to be
> changing regularly that I'm ignoring?


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Old 20 Nov 2006, 11:27 am   #5 (permalink)
Daniel
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Default Re: How often do you change your transmission fluid?

Joe wrote:
> I don't know that much about cars and don't have a regular mechanic so
> I just go to random service stations for oil changes every 3000 miles.
> I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
> and changed the transmission fluid. I haven't changed the transmission
> fluid since -is my car doomed? How often do I need to change it? I've
> also notice that people mention differential fluid - how often do I
> need to change that? Are there any other fluids that I need to be
> changing regularly that I'm ignoring?

===============================
Power steering fluid, brake fluid, coolant along with the engine oil,
transmssion and differential should be changed regularly.
The car is not "doomed" if the transmission fluid has not been changed
for a couple of years, although worn "burned" fluid is the number one
cause for failure of automatic transmisssions.
I use synthetic fluids. The differential fluid seems to hold up quite
well. Would suggest changing it when the timing belt is changed. The
main problem is that people either forget to change it at all, or
unintentionally drain it thinking they're draining the transmission and
then neglect to fill it which will cause major damage quickly. First
time I drained the differential fluid after purchasing the car used it
came out looking like chocolate milk. The correct color is light red.
After filling with Mobil 1 synthetic ATF I noticed an immediate
increase in power. Not a staggering change but definitely noticeable.
Actually the prior owner supplied documentation showing the
differential had been changed and they were billed for the fluid
installed - but to me, looked like it had not been changed for the life
of the car.
Power steering, you can judge by appearance vs. new. Can make the
steering rack and pump last longer which are both expensive parts -
like around $1200 for the rack. Fresh fliuid can help the seals last
longer, so for the slight cost of fluid I use a battery bulb to drain
the fluid at oil change intervals.
Brake fluid, you may not notice any difference, but it will extend the
life of the intermal brake components - wheel cylinders, calipers,
master cylinder by removing water absorbed from the atmosphere over
time which can create rust and under hard braking even cause the brakes
to fail to work properly from boiling fluid. Lots of people run the
brake fluid until it is postively black and the brakes still work
though. When new the brake fluid is light amber color.
For coolant you should use only Toyota brand coolant and distilled
water to best protect the inside of the engine from corrosion and
deposit buildup as well as preserving the cooling capacity.
For the transmission, make sure the final check of the fluid level is
done after driving at least ten miles and the transmission is fully at
operating temperature. A common error is to fill the fluid full, then
when it heats and expands it is actually over full.
I just change the transmission fluid when I change the engine oil, then
pour into empty oil bottles with ounce markings and replace exactly the
same amount drained. If you do your own service and allow the transaxle
to drain over night, almost another quart will drain out.

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Old 20 Nov 2006, 05:34 pm   #6 (permalink)
mrdarrett@gmail.com
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Default Re: How often do you change your transmission fluid?


Daniel wrote:
> Joe wrote:
> > I don't know that much about cars and don't have a regular mechanic so
> > I just go to random service stations for oil changes every 3000 miles.
> > I bought my ;'90 Camry 2.5 years ago and my mechanic back then flushed
> > and changed the transmission fluid. I haven't changed the transmission
> > fluid since -is my car doomed? How often do I need to change it? I've
> > also notice that people mention differential fluid - how often do I
> > need to change that? Are there any other fluids that I need to be
> > changing regularly that I'm ignoring?

> ===============================
> Power steering fluid, brake fluid, coolant along with the engine oil,
> transmssion and differential should be changed regularly.
> The car is not "doomed" if the transmission fluid has not been changed
> for a couple of years, although worn "burned" fluid is the number one
> cause for failure of automatic transmisssions.
> I use synthetic fluids. The differential fluid seems to hold up quite
> well. Would suggest changing it when the timing belt is changed. The
> main problem is that people either forget to change it at all, or
> unintentionally drain it thinking they're draining the transmission and
> then neglect to fill it which will cause major damage quickly. First
> time I drained the differential fluid after purchasing the car used it
> came out looking like chocolate milk. The correct color is light red.
> After filling with Mobil 1 synthetic ATF I noticed an immediate
> increase in power. Not a staggering change but definitely noticeable.
> Actually the prior owner supplied documentation showing the
> differential had been changed and they were billed for the fluid
> installed - but to me, looked like it had not been changed for the life
> of the car.
> Power steering, you can judge by appearance vs. new. Can make the
> steering rack and pump last longer which are both expensive parts -
> like around $1200 for the rack. Fresh fliuid can help the seals last
> longer, so for the slight cost of fluid I use a battery bulb to drain
> the fluid at oil change intervals.



For power steering fluid, I used to use the turkey baster method, but
then I tried this and I've had good luck with this method:

http://groups.google.com/group/alt.a...4ba28720c77338

Message 7 or so:
"You want to raise the front end,
disconnect and plug the return nipple in the reservoir,
and run the return line through clear vinyl tubing into a
bucket. Then, with engine off, turn the steering wheel
fully left and right as you add clean fluid, until the fluid
exiting through the vinyl looks clean. Under a quart
does the job, which is very safe and rewarding. "

Michael

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