I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
would like to change the fluid in the trans and transfer case. I was told 80
90 for the trans, and I haven't checked on the transfer case yet. Someone
else told me it might need automatic fluid or a different type of fluid for
the trans so I haven't done anything yet. I don't have the manual of course.
What should I do? Any web resource's out there?

Would Daimler Chrysler know? I have been told they only go back so many
years?

Any suggestions would be a great help to me.

-Brian

 

"Brian Hubley" <brianhubley422@earthlink.net> wrote in message
news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
> would like to change the fluid in the trans and transfer case. I was told
80
> 90 for the trans, and I haven't checked on the transfer case yet. Someone
> else told me it might need automatic fluid or a different type of fluid
for
> the trans so I haven't done anything yet. I don't have the manual of
course.
> What should I do? Any web resource's out there?
>
> Would Daimler Chrysler know? I have been told they only go back so many
> years?
>
> Any suggestions would be a great help to me.
>
> -Brian

DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or no
sulphur) gear oil, other wise the synchros will not be able to function
properly and you'll get serious cold gear clash when shifting. DC has a
special gear oil for AX15s, plus another for the later NV3550 used in the
TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
I've used it in my '94 YJ for years and swear by it.

 

"Brian Hubley" <brianhubley422@earthlink.net> wrote in message
news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
> would like to change the fluid in the trans and transfer case. I was told
80
> 90 for the trans, and I haven't checked on the transfer case yet. Someone
> else told me it might need automatic fluid or a different type of fluid
for
> the trans so I haven't done anything yet. I don't have the manual of
course.
> What should I do? Any web resource's out there?
>
> Would Daimler Chrysler know? I have been told they only go back so many
> years?
>
> Any suggestions would be a great help to me.
>
> -Brian

DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or no
sulphur) gear oil, other wise the synchros will not be able to function
properly and you'll get serious cold gear clash when shifting. DC has a
special gear oil for AX15s, plus another for the later NV3550 used in the
TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
I've used it in my '94 YJ for years and swear by it.

 

"Brian Hubley" <brianhubley422@earthlink.net> wrote in message
news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
> would like to change the fluid in the trans and transfer case. I was told
80
> 90 for the trans, and I haven't checked on the transfer case yet. Someone
> else told me it might need automatic fluid or a different type of fluid
for
> the trans so I haven't done anything yet. I don't have the manual of
course.
> What should I do? Any web resource's out there?
>
> Would Daimler Chrysler know? I have been told they only go back so many
> years?
>
> Any suggestions would be a great help to me.
>
> -Brian

DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or no
sulphur) gear oil, other wise the synchros will not be able to function
properly and you'll get serious cold gear clash when shifting. DC has a
special gear oil for AX15s, plus another for the later NV3550 used in the
TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
I've used it in my '94 YJ for years and swear by it.

 

"Brian Hubley" <brianhubley422@earthlink.net> wrote in message
news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
> would like to change the fluid in the trans and transfer case. I was told
80
> 90 for the trans, and I haven't checked on the transfer case yet. Someone
> else told me it might need automatic fluid or a different type of fluid
for
> the trans so I haven't done anything yet. I don't have the manual of
course.
> What should I do? Any web resource's out there?
>
> Would Daimler Chrysler know? I have been told they only go back so many
> years?
>
> Any suggestions would be a great help to me.
>
> -Brian

DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or no
sulphur) gear oil, other wise the synchros will not be able to function
properly and you'll get serious cold gear clash when shifting. DC has a
special gear oil for AX15s, plus another for the later NV3550 used in the
TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
I've used it in my '94 YJ for years and swear by it.

 

Thanx Jerry

"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:ce9ko42im7@enews1.newsguy.com...
>
> "Brian Hubley" <brianhubley422@earthlink.net> wrote in message
> news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> > I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago.
I
> > would like to change the fluid in the trans and transfer case. I was
told
> 80
> > 90 for the trans, and I haven't checked on the transfer case yet.
Someone
> > else told me it might need automatic fluid or a different type of fluid
> for
> > the trans so I haven't done anything yet. I don't have the manual of
> course.
> > What should I do? Any web resource's out there?
> >
> > Would Daimler Chrysler know? I have been told they only go back so many
> > years?
> >
> > Any suggestions would be a great help to me.
> >
> > -Brian
>
> DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or
no
> sulphur) gear oil, other wise the synchros will not be able to function
> properly and you'll get serious cold gear clash when shifting. DC has a
> special gear oil for AX15s, plus another for the later NV3550 used in the
> TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
> I've used it in my '94 YJ for years and swear by it.
>
>

 

Thanx Jerry

"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:ce9ko42im7@enews1.newsguy.com...
>
> "Brian Hubley" <brianhubley422@earthlink.net> wrote in message
> news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> > I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago.
I
> > would like to change the fluid in the trans and transfer case. I was
told
> 80
> > 90 for the trans, and I haven't checked on the transfer case yet.
Someone
> > else told me it might need automatic fluid or a different type of fluid
> for
> > the trans so I haven't done anything yet. I don't have the manual of
> course.
> > What should I do? Any web resource's out there?
> >
> > Would Daimler Chrysler know? I have been told they only go back so many
> > years?
> >
> > Any suggestions would be a great help to me.
> >
> > -Brian
>
> DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or
no
> sulphur) gear oil, other wise the synchros will not be able to function
> properly and you'll get serious cold gear clash when shifting. DC has a
> special gear oil for AX15s, plus another for the later NV3550 used in the
> TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
> I've used it in my '94 YJ for years and swear by it.
>
>

 

Thanx Jerry

"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:ce9ko42im7@enews1.newsguy.com...
>
> "Brian Hubley" <brianhubley422@earthlink.net> wrote in message
> news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> > I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago.
I
> > would like to change the fluid in the trans and transfer case. I was
told
> 80
> > 90 for the trans, and I haven't checked on the transfer case yet.
Someone
> > else told me it might need automatic fluid or a different type of fluid
> for
> > the trans so I haven't done anything yet. I don't have the manual of
> course.
> > What should I do? Any web resource's out there?
> >
> > Would Daimler Chrysler know? I have been told they only go back so many
> > years?
> >
> > Any suggestions would be a great help to me.
> >
> > -Brian
>
> DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or
no
> sulphur) gear oil, other wise the synchros will not be able to function
> properly and you'll get serious cold gear clash when shifting. DC has a
> special gear oil for AX15s, plus another for the later NV3550 used in the
> TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
> I've used it in my '94 YJ for years and swear by it.
>
>

 

Thanx Jerry

"Jerry McG" <gmcgeorge.remove@frontier.net> wrote in message
news:ce9ko42im7@enews1.newsguy.com...
>
> "Brian Hubley" <brianhubley422@earthlink.net> wrote in message
> news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> > I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago.
I
> > would like to change the fluid in the trans and transfer case. I was
told
> 80
> > 90 for the trans, and I haven't checked on the transfer case yet.
Someone
> > else told me it might need automatic fluid or a different type of fluid
> for
> > the trans so I haven't done anything yet. I don't have the manual of
> course.
> > What should I do? Any web resource's out there?
> >
> > Would Daimler Chrysler know? I have been told they only go back so many
> > years?
> >
> > Any suggestions would be a great help to me.
> >
> > -Brian
>
> DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or
no
> sulphur) gear oil, other wise the synchros will not be able to function
> properly and you'll get serious cold gear clash when shifting. DC has a
> special gear oil for AX15s, plus another for the later NV3550 used in the
> TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
> I've used it in my '94 YJ for years and swear by it.
>
>

 

Jerry McG wrote:
>
> "Brian Hubley" <brianhubley422@earthlink.net> wrote in message
> news:7hONc.16881$iK.10045@newsread2.news.atl.earth link.net...
> > I have a 91 YJ 4.0L manual with alot of miles I bought not to long ago. I
> > would like to change the fluid in the trans and transfer case. I was told
> 80
> > 90 for the trans, and I haven't checked on the transfer case yet. Someone
> > else told me it might need automatic fluid or a different type of fluid
> for
> > the trans so I haven't done anything yet. I don't have the manual of
> course.
> > What should I do? Any web resource's out there?
> >
> > Would Daimler Chrysler know? I have been told they only go back so many
> > years?
> >
> > Any suggestions would be a great help to me.
> >
> > -Brian
>
> DO NOT put 80w-90 in your transmission. It requires a GL3 or GL4 (low or no
> sulphur) gear oil, other wise the synchros will not be able to function
> properly and you'll get serious cold gear clash when shifting. DC has a
> special gear oil for AX15s, plus another for the later NV3550 used in the
> TJs. Check with your local dealer. Alternatively, you can use Redline MTL.
> I've used it in my '94 YJ for years and swear by it.

So just what do you think 80W90 is?

Last time 'I' looked it was called gear oil.

He just has to make sure it doesn't have limited slip additive.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's