differential oil

Reply
 
LinkBack Thread Tools Display Modes
Old 20 Dec 2006, 03:19 pm   #1 (permalink)
mrdarrett@gmail.com
Guest
  • Posts: n/a
  • User Status:


Default differential oil

My co-workers were a bit surprised when I told them my Camry ('96, '99)
takes ATF fluid in the differential. They said they would think it
would take gear oil, since the diff does a lot of hard work, to extend
the life of the differential gears.

Then again, one of these co-workers has a Dodge, and enjoys pushing the
metal to its limits. He uses 10W40 for his oil, saying this thicker
oil reduces wear.

Any thoughts on this? Would it be advisable to add 10% or so heavy
gear oil to the differential oil? Or is this just not a problem with
the Camry?

I'm at 74k miles on the '99, and 139k miles on my '96.

Michael

  Reply With Quote
Old 20 Dec 2006, 03:38 pm   #2 (permalink)
EdV
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil

This is the way I understand about FWD and RWD. Camrys are FWD and the
differential is infact the Automatic Transmission. I have previously
owned a RAV4 which is All wheel drive and same as a RWD car, there is a
differential in the rear. I used gear oil on the rear differential and
I use ATF on the transmission.

  Reply With Quote
Old 20 Dec 2006, 04:05 pm   #3 (permalink)
Daniel
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil

mrdarrett@gmail.com wrote:
> Would it be advisable to add 10% or so heavy
> gear oil to the differential oil? Or is this just not a problem with
> the Camry?

===============
I tried something similar once and it reduced power.
If you want to upgrade use Mobil 1 fully synthetic ATF.
The rear wheel drive differential also changes direction of power flow
with the pinion and ring gear. I think it is called a hypoid gear with
a sliding frictional surface.
The power transfer to the differential in the Camry uses gears where
the teeth mesh in the standard fashion, plus the side gears only even
move relative to one another when turning a corner.
Seems hard to believe at first when accustomed to RWD but ATF works
just fine.
Just remember to check, fill and change the fluid if the reservoir is
separate, it doesn't run well on no fluid or neglected fluid.

  Reply With Quote
Old 20 Dec 2006, 04:35 pm   #4 (permalink)
m Ransley
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil

No dont guess, but better is mobil 1 trans fluid.

  Reply With Quote
Old 20 Dec 2006, 06:35 pm   #5 (permalink)
mrdarrett@gmail.com
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil


m Ransley wrote:
> No dont guess, but better is mobil 1 trans fluid.



Right, I'd already replaced both my Camrys' diffs with Mobil 1 Synth
ATF.

Thanks,

Michael

  Reply With Quote
Old 20 Dec 2006, 09:06 pm   #6 (permalink)
Jason James
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil



"EdV" <edramirventura@gmail.com> wrote in message
news:1166650696.471986.176800@t46g2000cwa.googlegr oups.com...
> This is the way I understand about FWD and RWD. Camrys are FWD and the
> differential is infact the Automatic Transmission. I have previously
> owned a RAV4 which is All wheel drive and same as a RWD car, there is a
> differential in the rear. I used gear oil on the rear differential and
> I use ATF on the transmission.


The reason you can use light-grade oils in front-wheeldrive cars with a
transverse mounted engine, is because the differential is basically another
gearset. Rear wheel drive cars have hypoid gear-meshing diffs which allows
the drive to do a right-andle (tail-shaft to axles). These gears *slide* as
they mesh, which means you need a very strong film of oil to stop metal on
metal contact.

Jason


  Reply With Quote
Old 21 Dec 2006, 06:51 am   #7 (permalink)
Ogo
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil

So, what does the owners handbook say? Toyota have designed and built more
cars than you and I have, they may have a bit of an idea on what to put in
them.
<mrdarrett@gmail.com> wrote in message
news:1166649574.089380.55960@79g2000cws.googlegrou ps.com...
> My co-workers were a bit surprised when I told them my Camry ('96, '99)
> takes ATF fluid in the differential. They said they would think it
> would take gear oil, since the diff does a lot of hard work, to extend
> the life of the differential gears.
>
> Then again, one of these co-workers has a Dodge, and enjoys pushing the
> metal to its limits. He uses 10W40 for his oil, saying this thicker
> oil reduces wear.
>
> Any thoughts on this? Would it be advisable to add 10% or so heavy
> gear oil to the differential oil? Or is this just not a problem with
> the Camry?
>
> I'm at 74k miles on the '99, and 139k miles on my '96.
>
> Michael
>



  Reply With Quote
Old 22 Dec 2006, 12:39 am   #8 (permalink)
Ogo
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil


"Ogo" <ogo@ogo.com> wrote in message
news:Irvih.11387$HU.10264@news-server.bigpond.net.au...
> So, what does the owners handbook say? Toyota have designed and built more
> cars than you and I have, they may have a bit of an idea on what to put in
> them.


Sorry, that may have sounded a bit rude, it wasn't intended to be, drunk in
charge of a keyboard, your honour!
But seriously, in my experience of years of mucking about with cars and
bikes, I have found that if you just want to use the thing with the least
trouble, just stick to the manufacturers specs, they spend millions of
dollars testing these things in ALL types of enviroments so why spend too
much time re-iventing the wheel.'
Sorry if I caused any offence, have a good Christmas break.
OGO.


  Reply With Quote
Old 26 Dec 2006, 12:00 pm   #9 (permalink)
mrdarrett@gmail.com
Guest
  • Posts: n/a
  • User Status:


Default Re: differential oil


Ogo wrote:
> "Ogo" <ogo@ogo.com> wrote in message
> news:Irvih.11387$HU.10264@news-server.bigpond.net.au...
> > So, what does the owners handbook say? Toyota have designed and built more
> > cars than you and I have, they may have a bit of an idea on what to put in
> > them.

>
> Sorry, that may have sounded a bit rude, it wasn't intended to be, drunk in
> charge of a keyboard, your honour!
> But seriously, in my experience of years of mucking about with cars and
> bikes, I have found that if you just want to use the thing with the least
> trouble, just stick to the manufacturers specs, they spend millions of
> dollars testing these things in ALL types of enviroments so why spend too
> much time re-iventing the wheel.'
> Sorry if I caused any offence, have a good Christmas break.
> OGO.




No prob, no offense taken. I don't have the manual in front of me, but
I'd be surprised if the original Owner's Manual mentioned the Dexron
II/III for diff service. (Manual seems to go on and on about how to
use seat belts, the CD changer, etc.) Got diff fluid info from my
Haynes manual (and from the online factory service manuals from
turboninjas.com/camry).

Guess I shouldn't take advice from Dodge-driving co-workers. ;-)

Merry Christmas all,

Michael

  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 02:05 pm.

Attribution:
Autoblog
Powered by Yahoo Answers



ToyotaLexusForum.com is an unofficial community for car enthusiasts. ToyotaLexusForum.com is not affiliated with Toyota Motor Corporation in any way.
Toyota Motor Corporation does not sponsor, support, or endorse ToyotaLexusForum.com in any way.
Copyright/trademark/sales mark infringements are not intended or implied.