Transmission & Transfer Case Lubricant Questions ???
 

I have a 2000 Jeep Grand Cherokee, and my son has a 1997 JGC. We are doing
some lube changes for his car (which he just acquired), and we are comparing
some of the specifications in both of the Jeep manuals. We have come up
with some basic questions.




1. The 1997 book says for the *transmission oil*, it should be ATF+2 or
ATF+2 7176. The 2000 book says it should be ATF+3 or
ATF+3 7176.

QUESTION-- is the ATF+3 just the updated spec for ATF+2 ? If so, I
should use ATF+3
in the 1997 like in the 2000 model ?


2. For the *transfer case* oil, both books say to use :

"automatic transmission fluid or equivalent, labeled Dextron
III"

QUESTION-- is it literally true that the transfer case uses regular
transmission fluid ? IF SO, then why
doesn't the book say use ATF+3, which is
the spec given for the transmission fluid ?
Perhaps ATF+3 is the same as Dextron III
??


3. For the *differentials*, the book says to use SAE 80w-90 gear lube in
the front axle, and SAE 75w-140 synthetic
in the rear axle. They say IF the car has Trac-Loc, to use a friction
modifier in the rear axle.


QUESTION-- How can we know if this used vehicle has Trac-Loc ? (The
transmission type is Quadra-trac)
We see no markings or other indication if this
vehicle had that option (Trac-Loc) and we don't have
the original invoice so we don't know how we
would know. I don't know how much difference it
would make. I do have the friction modifier
on hand as I used it in my 2000, but I don't know if
I should add it.

---------------------------------------------------------------

We will appreciate any comments and advice on these questions !!

Thank You very much !!

--James---

Re: Transmission & Transfer Case Lubricant Questions ???
 

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:1m2dnbJ96f-NxM-iXTWJkQ@comcast.com...
>
>
> I have a 2000 Jeep Grand Cherokee, and my son has a 1997 JGC. We are
doing
> some lube changes for his car (which he just acquired), and we are
comparing
> some of the specifications in both of the Jeep manuals. We have come up
> with some basic questions.
>
>
>
>
> 1. The 1997 book says for the *transmission oil*, it should be ATF+2 or
> ATF+2 7176. The 2000 book says it should be ATF+3 or
> ATF+3 7176.
>
> QUESTION-- is the ATF+3 just the updated spec for ATF+2 ? If so,
I
> should use ATF+3
> in the 1997 like in the 2000 model ?
>
>
> 2. For the *transfer case* oil, both books say to use :
>
> "automatic transmission fluid or equivalent, labeled Dextron
> III"
>
> QUESTION-- is it literally true that the transfer case uses regular
> transmission fluid ? IF SO, then why
> doesn't the book say use ATF+3, which
is
> the spec given for the transmission fluid ?
> Perhaps ATF+3 is the same as Dextron
III
> ??
>
>
> 3. For the *differentials*, the book says to use SAE 80w-90 gear lube
in
> the front axle, and SAE 75w-140 synthetic
> in the rear axle. They say IF the car has Trac-Loc, to use a
friction
> modifier in the rear axle.
>
>
> QUESTION-- How can we know if this used vehicle has Trac-Loc ?
(The
> transmission type is Quadra-trac)
> We see no markings or other indication if
this
> vehicle had that option (Trac-Loc) and we don't have
> the original invoice so we don't know how
we
> would know. I don't know how much difference it
> would make. I do have the friction
modifier
> on hand as I used it in my 2000, but I don't know if
> I should add it.
>
> ---------------------------------------------------------------
>
> We will appreciate any comments and advice on these questions !!
>
> Thank You very much !!
>
> --James---
>
>
>

1) ATF +3 and Dexron III are the same thing, and backward compatible with +2
and Dex II. The difference in verbiage proabably has to do with the
transmission being manufactured by one outfit and the tcase by another. Each
writing and supplying their own maintenance instructions.

2) If the axle is trac lok it will have 2 tags on the cover, and /or the tag
that shows the ratio will show it with an L where the decimal would go. I.E.
3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
modifier compound, it hurts nothing if in fact the axle is the regular kind.
If you are going to drain the old fuid anyway, the cover will be coming off,
and you will see that a trac-lok diff has a drum arrangement with just
visible clutch packs. A regular set will have clearly visible side and
spider gears, with no evidence of a clutch pack.


---
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Re: Transmission & Transfer Case Lubricant Questions ???
 

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:1m2dnbJ96f-NxM-iXTWJkQ@comcast.com...
>
>
> I have a 2000 Jeep Grand Cherokee, and my son has a 1997 JGC. We are
doing
> some lube changes for his car (which he just acquired), and we are
comparing
> some of the specifications in both of the Jeep manuals. We have come up
> with some basic questions.
>
>
>
>
> 1. The 1997 book says for the *transmission oil*, it should be ATF+2 or
> ATF+2 7176. The 2000 book says it should be ATF+3 or
> ATF+3 7176.
>
> QUESTION-- is the ATF+3 just the updated spec for ATF+2 ? If so,
I
> should use ATF+3
> in the 1997 like in the 2000 model ?
>
>
> 2. For the *transfer case* oil, both books say to use :
>
> "automatic transmission fluid or equivalent, labeled Dextron
> III"
>
> QUESTION-- is it literally true that the transfer case uses regular
> transmission fluid ? IF SO, then why
> doesn't the book say use ATF+3, which
is
> the spec given for the transmission fluid ?
> Perhaps ATF+3 is the same as Dextron
III
> ??
>
>
> 3. For the *differentials*, the book says to use SAE 80w-90 gear lube
in
> the front axle, and SAE 75w-140 synthetic
> in the rear axle. They say IF the car has Trac-Loc, to use a
friction
> modifier in the rear axle.
>
>
> QUESTION-- How can we know if this used vehicle has Trac-Loc ?
(The
> transmission type is Quadra-trac)
> We see no markings or other indication if
this
> vehicle had that option (Trac-Loc) and we don't have
> the original invoice so we don't know how
we
> would know. I don't know how much difference it
> would make. I do have the friction
modifier
> on hand as I used it in my 2000, but I don't know if
> I should add it.
>
> ---------------------------------------------------------------
>
> We will appreciate any comments and advice on these questions !!
>
> Thank You very much !!
>
> --James---
>
>
>

1) ATF +3 and Dexron III are the same thing, and backward compatible with +2
and Dex II. The difference in verbiage proabably has to do with the
transmission being manufactured by one outfit and the tcase by another. Each
writing and supplying their own maintenance instructions.

2) If the axle is trac lok it will have 2 tags on the cover, and /or the tag
that shows the ratio will show it with an L where the decimal would go. I.E.
3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
modifier compound, it hurts nothing if in fact the axle is the regular kind.
If you are going to drain the old fuid anyway, the cover will be coming off,
and you will see that a trac-lok diff has a drum arrangement with just
visible clutch packs. A regular set will have clearly visible side and
spider gears, with no evidence of a clutch pack.


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.514 / Virus Database: 312 - Release Date: 8/28/2003

Re: Transmission & Transfer Case Lubricant Questions ???
 

John, what an informative reply. Thanks !!


--James--

--------------------------------

1) ATF +3 and Dexron III are the same thing, and backward compatible with +2
and Dex II. The difference in verbiage proabably has to do with the
transmission being manufactured by one outfit and the tcase by another. Each
writing and supplying their own maintenance instructions.

2) If the axle is trac lok it will have 2 tags on the cover, and /or the tag
that shows the ratio will show it with an L where the decimal would go. I.E.
3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
modifier compound, it hurts nothing if in fact the axle is the regular kind.
If you are going to drain the old fuid anyway, the cover will be coming off,
and you will see that a trac-lok diff has a drum arrangement with just
visible clutch packs. A regular set will have clearly visible side and
spider gears, with no evidence of a clutch pack.

Re: Transmission & Transfer Case Lubricant Questions ???
 

John, what an informative reply. Thanks !!


--James--

--------------------------------

1) ATF +3 and Dexron III are the same thing, and backward compatible with +2
and Dex II. The difference in verbiage proabably has to do with the
transmission being manufactured by one outfit and the tcase by another. Each
writing and supplying their own maintenance instructions.

2) If the axle is trac lok it will have 2 tags on the cover, and /or the tag
that shows the ratio will show it with an L where the decimal would go. I.E.
3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
modifier compound, it hurts nothing if in fact the axle is the regular kind.
If you are going to drain the old fuid anyway, the cover will be coming off,
and you will see that a trac-lok diff has a drum arrangement with just
visible clutch packs. A regular set will have clearly visible side and
spider gears, with no evidence of a clutch pack.

Re: Transmission & Transfer Case Lubricant Questions ???
 

Yeah, except that it is WRONG!!!! ATF +3 aka 7176 is NOT THE SAME THING AS
Dexron III!!!!

ATF +2 and ATF +3 are needed for compatibility with the friction materials
in your Chrysler-built transmission. (The reason you only need Dexron III
in the transfer case is that it doesn't have friction materials in it.)

Earle

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:QY-cnZlGEa0vD8-iXTWJjQ@comcast.com...
>
>
> John, what an informative reply. Thanks !!
>
>
> --James--
>
> --------------------------------
>
> 1) ATF +3 and Dexron III are the same thing, and backward compatible with
+2
> and Dex II. The difference in verbiage proabably has to do with the
> transmission being manufactured by one outfit and the tcase by another.
Each
> writing and supplying their own maintenance instructions.
>
> 2) If the axle is trac lok it will have 2 tags on the cover, and /or the
tag
> that shows the ratio will show it with an L where the decimal would go.
I.E.
> 3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
> modifier compound, it hurts nothing if in fact the axle is the regular
kind.
> If you are going to drain the old fuid anyway, the cover will be coming
off,
> and you will see that a trac-lok diff has a drum arrangement with just
> visible clutch packs. A regular set will have clearly visible side and
> spider gears, with no evidence of a clutch pack.
>
>
>

Re: Transmission & Transfer Case Lubricant Questions ???
 

Yeah, except that it is WRONG!!!! ATF +3 aka 7176 is NOT THE SAME THING AS
Dexron III!!!!

ATF +2 and ATF +3 are needed for compatibility with the friction materials
in your Chrysler-built transmission. (The reason you only need Dexron III
in the transfer case is that it doesn't have friction materials in it.)

Earle

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:QY-cnZlGEa0vD8-iXTWJjQ@comcast.com...
>
>
> John, what an informative reply. Thanks !!
>
>
> --James--
>
> --------------------------------
>
> 1) ATF +3 and Dexron III are the same thing, and backward compatible with
+2
> and Dex II. The difference in verbiage proabably has to do with the
> transmission being manufactured by one outfit and the tcase by another.
Each
> writing and supplying their own maintenance instructions.
>
> 2) If the axle is trac lok it will have 2 tags on the cover, and /or the
tag
> that shows the ratio will show it with an L where the decimal would go.
I.E.
> 3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
> modifier compound, it hurts nothing if in fact the axle is the regular
kind.
> If you are going to drain the old fuid anyway, the cover will be coming
off,
> and you will see that a trac-lok diff has a drum arrangement with just
> visible clutch packs. A regular set will have clearly visible side and
> spider gears, with no evidence of a clutch pack.
>
>
>

Re: Transmission & Transfer Case Lubricant Questions ???
 

For the transfer case, literally any good grade of ATF can be used so
whatever you're putting into your automatic transmission can also be used in
the transfer case.

It would be hard to find a GL-5 Gear Lube of the viscosities you're looking
at that did not already have the additive required for Tracloc. I've yet to
see any gear lube on a store shelf that did not have the friction modifier
already. The reason is that the friction modifier addtive is compatible for
axles with or without Traclocl.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:QY-cnZlGEa0vD8-iXTWJjQ@comcast.com...
>
>
> John, what an informative reply. Thanks !!
>
>
> --James--
>
> --------------------------------
>
> 1) ATF +3 and Dexron III are the same thing, and backward compatible with
+2
> and Dex II. The difference in verbiage proabably has to do with the
> transmission being manufactured by one outfit and the tcase by another.
Each
> writing and supplying their own maintenance instructions.
>
> 2) If the axle is trac lok it will have 2 tags on the cover, and /or the
tag
> that shows the ratio will show it with an L where the decimal would go.
I.E.
> 3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
> modifier compound, it hurts nothing if in fact the axle is the regular
kind.
> If you are going to drain the old fuid anyway, the cover will be coming
off,
> and you will see that a trac-lok diff has a drum arrangement with just
> visible clutch packs. A regular set will have clearly visible side and
> spider gears, with no evidence of a clutch pack.
>
>
>

Re: Transmission & Transfer Case Lubricant Questions ???
 

For the transfer case, literally any good grade of ATF can be used so
whatever you're putting into your automatic transmission can also be used in
the transfer case.

It would be hard to find a GL-5 Gear Lube of the viscosities you're looking
at that did not already have the additive required for Tracloc. I've yet to
see any gear lube on a store shelf that did not have the friction modifier
already. The reason is that the friction modifier addtive is compatible for
axles with or without Traclocl.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

"James Nipper" <jnipper@nospam.fdn.com> wrote in message
news:QY-cnZlGEa0vD8-iXTWJjQ@comcast.com...
>
>
> John, what an informative reply. Thanks !!
>
>
> --James--
>
> --------------------------------
>
> 1) ATF +3 and Dexron III are the same thing, and backward compatible with
+2
> and Dex II. The difference in verbiage proabably has to do with the
> transmission being manufactured by one outfit and the tcase by another.
Each
> writing and supplying their own maintenance instructions.
>
> 2) If the axle is trac lok it will have 2 tags on the cover, and /or the
tag
> that shows the ratio will show it with an L where the decimal would go.
I.E.
> 3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
> modifier compound, it hurts nothing if in fact the axle is the regular
kind.
> If you are going to drain the old fuid anyway, the cover will be coming
off,
> and you will see that a trac-lok diff has a drum arrangement with just
> visible clutch packs. A regular set will have clearly visible side and
> spider gears, with no evidence of a clutch pack.
>
>
>

Re: Transmission & Transfer Case Lubricant Questions ???
 

"Gerald G. McGeorge" <gmcgeorge@frontier.net> wrote in message
news:vl5932j3r4dcb@corp.supernews.com...
> Yes, but it doesn't hurt to add it either, it will in most cases smooth
out
> the engagement of the clutch packs.

Yes, absolutely it can hurt the Tracloc to add additional friction modifier
if its already present in sufficient quantity. Too much friction modifier
is as bad as not enough. IF there is a little chatter with the amount
contained in the gear lube, then a little friction modifier can be added a
little at a time until it stop... but it can definitely screw the Tracloc if
you just add friction modifier if there's enough already present in the gear
lube.

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/



> "Jerry Bransford" <jerrypb@mecox.net> wrote in message
> news:ddx4b.36665$Qy4.16814@fed1read05...
> > For the transfer case, literally any good grade of ATF can be used so
> > whatever you're putting into your automatic transmission can also be
used
> in
> > the transfer case.
> >
> > It would be hard to find a GL-5 Gear Lube of the viscosities you're
> looking
> > at that did not already have the additive required for Tracloc. I've
yet
> to
> > see any gear lube on a store shelf that did not have the friction
modifier
> > already. The reason is that the friction modifier addtive is compatible
> for
> > axles with or without Traclocl.
> >
> > Jerry
> > --
> > Jerry Bransford
> > To email, remove 'me' from my email address
> > KC6TAY, PP-ASEL
> > See the Geezer Jeep at
> > http://members.cox.net/jerrypb/
> >
> > "James Nipper" <jnipper@nospam.fdn.com> wrote in message
> > news:QY-cnZlGEa0vD8-iXTWJjQ@comcast.com...
> > >
> > >
> > > John, what an informative reply. Thanks !!
> > >
> > >
> > > --James--
> > >
> > > --------------------------------
> > >
> > > 1) ATF +3 and Dexron III are the same thing, and backward compatible
> with
> > +2
> > > and Dex II. The difference in verbiage proabably has to do with the
> > > transmission being manufactured by one outfit and the tcase by
another.
> > Each
> > > writing and supplying their own maintenance instructions.
> > >
> > > 2) If the axle is trac lok it will have 2 tags on the cover, and /or
the
> > tag
> > > that shows the ratio will show it with an L where the decimal would
go.
> > I.E.
> > > 3L55 is a 3.55 axle with trac lok. If in the slightest doubt add the
> > > modifier compound, it hurts nothing if in fact the axle is the regular
> > kind.
> > > If you are going to drain the old fuid anyway, the cover will be
coming
> > off,
> > > and you will see that a trac-lok diff has a drum arrangement with just
> > > visible clutch packs. A regular set will have clearly visible side and
> > > spider gears, with no evidence of a clutch pack.
> > >
> > >
> > >
> >
> >
>
>