Changing transmission lube

I've got a Rubicon with an NV1500 5 sp transmission. I need to change the
lube. Pennzoil has some "Synchromesh Fluid" it states it's for Chrysler
products. Part number 12345577. The question is, is this stuff any better
than the dealer's stuff? Or, is there anything better than the Pennzoil? Any
recommendations for the front and rear axles? These are limited slip
differentials. Also, the service manual says to add 4 oz. of Limited Slip
additive. Again, anybody have any recommendations aside from Chrysler?
The service manual just doesn't have that much information.

Thanks

Lloyd Hanning

I believe that synthetic fluids are worth the extra expense.

If you perform all the suggested maintenance exactly on schedule the extra
protective properties are probably not needed.

But that is just my opinion.


"Lloyd Hanning" > wrote in message
om...
> I've got a Rubicon with an NV1500 5 sp transmission. I need to change the
> lube. Pennzoil has some "Synchromesh Fluid" it states it's for Chrysler
> products. Part number 12345577. The question is, is this stuff any better
> than the dealer's stuff? Or, is there anything better than the Pennzoil?
> Any recommendations for the front and rear axles? These are limited slip
> differentials. Also, the service manual says to add 4 oz. of Limited Slip
> additive. Again, anybody have any recommendations aside from Chrysler?
> The service manual just doesn't have that much information.
>
> Thanks
>
> Lloyd Hanning
>

Lloyd, if you have a 5-speed in your Rubicon you have the NV3550. The
Pennzoil is the same stuff you get at the dealer but in a different bottle;
the dealer will charge you through the nose for it.

"Robert Brace" > wrote in message
news:hQ93g.67204$WI1.61644@pd7tw2no...
>
> "Lloyd Hanning" > wrote in message
> om...
>> I've got a Rubicon with an NV1500 5 sp transmission. I need to change the
>> lube. Pennzoil has some "Synchromesh Fluid" it states it's for Chrysler
>> products. Part number 12345577. The question is, is this stuff any better
>> than the dealer's stuff? Or, is there anything better than the Pennzoil?
>> Any recommendations for the front and rear axles? These are limited slip
>> differentials. Also, the service manual says to add 4 oz. of Limited Slip
>> additive. Again, anybody have any recommendations aside from Chrysler?
>> The service manual just doesn't have that much information.
>>
>> Thanks
>>
>> Lloyd Hanning
>>
>
> Are you sure that its not an NV3550 in your Rubicon? What year is it?
> Front & rear Axles should be D44, but the rear "limited slip" could be the
> "gear" type, not the "friction plate" type used in the non-Rubicon
> applications. If so, the axles don't require the additional Limited Slip
> additive. It won't hurt -- its just not needed. Normally any high
> quality hypoid GL-5 approved axle lube will be automatically approved for
> the plate-type limited slips anyway.
> Bob
>
>

Do Rubicons have limited slip?? I thought they just had air actuated
lockers??

Jeff



"Matt Macchiarolo" > wrote in message
...
> Lloyd, if you have a 5-speed in your Rubicon you have the NV3550. The
> Pennzoil is the same stuff you get at the dealer but in a different
> bottle; the dealer will charge you through the nose for it.
>
> "Robert Brace" > wrote in message
> news:hQ93g.67204$WI1.61644@pd7tw2no...
>>
>> "Lloyd Hanning" > wrote in message
>> om...
>>> I've got a Rubicon with an NV1500 5 sp transmission. I need to change
>>> the lube. Pennzoil has some "Synchromesh Fluid" it states it's for
>>> Chrysler products. Part number 12345577. The question is, is this stuff
>>> any better than the dealer's stuff? Or, is there anything better than
>>> the Pennzoil? Any recommendations for the front and rear axles? These
>>> are limited slip differentials. Also, the service manual says to add 4
>>> oz. of Limited Slip additive. Again, anybody have any recommendations
>>> aside from Chrysler?
>>> The service manual just doesn't have that much information.
>>>
>>> Thanks
>>>
>>> Lloyd Hanning
>>>
>>
>> Are you sure that its not an NV3550 in your Rubicon? What year is it?
>> Front & rear Axles should be D44, but the rear "limited slip" could be
>> the "gear" type, not the "friction plate" type used in the non-Rubicon
>> applications. If so, the axles don't require the additional Limited Slip
>> additive. It won't hurt -- its just not needed. Normally any high
>> quality hypoid GL-5 approved axle lube will be automatically approved for
>> the plate-type limited slips anyway.
>> Bob
>>
>>
>
>

Yes and no. They are not clutch activated ltd slips, but are not true
lockers either.

tw
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco

"There is a very fine line between 'hobby' and 'mental illness'."

Pronunciation: 'jEp Function: noun Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________


4X4PLAY wrote:
> Do Rubicons have limited slip?? I thought they just had air actuated
> lockers??
>
> Jeff

Not true lockers in what way?

"twaldron" > wrote in message
. net...
> Yes and no. They are not clutch activated ltd slips, but are not true
> lockers either.
>
> tw
> __________________________________________________ ___________________
> 2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
>
> "There is a very fine line between 'hobby' and 'mental illness'."
>
> Pronunciation: 'jEp Function: noun Date: 1940
>
> Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
> A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
> capacity and four-wheel drive used by the U.S. army in World War II.
> __________________________________________________ ___________________
>
>
> 4X4PLAY wrote:
>> Do Rubicons have limited slip?? I thought they just had air actuated
>> lockers??
>>
>> Jeff

I misread his question. I was refering to the ltd. slip. They are a gear
ltd. slip, not a clutch activated version. I re-read Jeff's question and
to answer correctly, they have both, ltd. slip and the switchable lockers.

tw
__________________________________________________ ___________________
2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco

"There is a very fine line between 'hobby' and 'mental illness'."

Pronunciation: 'jEp Function: noun Date: 1940

Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
capacity and four-wheel drive used by the U.S. army in World War II.
__________________________________________________ ___________________

Matt Macchiarolo wrote:
> Not true lockers in what way?
>
> "twaldron" > wrote in message
> . net...
>
>>Yes and no. They are not clutch activated ltd slips, but are not true
>>lockers either.
>>
>>tw
>>________________________________________________ _____________________
>>2003 TJ Rubicon * 2001 XJ Sport * 1971 Bill Stroppe Baja Bronco
>>
>>"There is a very fine line between 'hobby' and 'mental illness'."
>>
>>Pronunciation: 'jEp Function: noun Date: 1940
>>
>>Etymology: from g. p. (G= 'Government' P= '80 inch wheelbase')
>>A small general-purpose motor vehicle with 80" wheelbase, 1/4-ton
>>capacity and four-wheel drive used by the U.S. army in World War II.
>>________________________________________________ _____________________
>>
>>
>>4X4PLAY wrote:
>>
>>>Do Rubicons have limited slip?? I thought they just had air actuated
>>>lockers??
>>>
>>>Jeff
>
>
>

Both: http://www.billhughes.com/temp/Tru-Lok.jpg Gear type limited
slip.
God Bless America, Bill O|||||||O


4X4PLAY wrote:
>
> Do Rubicons have limited slip?? I thought they just had air actuated
> lockers??
>
> Jeff

Kool info guys...I had just figured they were open till you switch them
on...I'm learning more everyday =)
Damn I wish I knew more when I bought my TJ...those new Rubi's look pretty
good but my heep may be too beat to sell =( lol...

Jeff - '03 TJ



"L.W.(Bill) Hughes III" > wrote in message
...
> Both: http://www.billhughes.com/temp/Tru-Lok.jpg Gear type limited
> slip.
> God Bless America, Bill O|||||||O
>
>
> 4X4PLAY wrote:
>>
>> Do Rubicons have limited slip?? I thought they just had air actuated
>> lockers??
>>
>> Jeff