Differential Lubricant Recommendations?
 

I'm about to drain and refill the front and rear differentials on my '98 GC
5.9 and am open to recommendations.

Fuels economy is a factor in my choice. I do not tow with the vehicle and
most of my driving is interstate at 70+ mph.

The vehicle has 107,000 miles and I put on about 30,000/year right now. I'd
prefer to not have to change it again for another 50-60,000 miles.

Thoughts?

Re: Differential Lubricant Recommendations?
 

Synthetic 75-90. I don't know if you'll see the difference in fuel mileage
though but it sure can't hurt. I've got Amsoil in my 99 Cherokee. I also put
Amsoil fluids in the transfer case and transmissions. I've used Mobil 1
synthetic in many manual shift VW gearboxes and always had easy shifting all
year around.

JoBo

June Snyder" <rcsnyder@yahoo.com> wrote in message
news:m86Pf.14219$iR1.7978@tornado.rdc-kc.rr.com...
> I'm about to drain and refill the front and rear differentials on my '98
> GC 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now.
> I'd prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?
>

Re: Differential Lubricant Recommendations?
 

Synthetic 75-90. I don't know if you'll see the difference in fuel mileage
though but it sure can't hurt. I've got Amsoil in my 99 Cherokee. I also put
Amsoil fluids in the transfer case and transmissions. I've used Mobil 1
synthetic in many manual shift VW gearboxes and always had easy shifting all
year around.

JoBo

June Snyder" <rcsnyder@yahoo.com> wrote in message
news:m86Pf.14219$iR1.7978@tornado.rdc-kc.rr.com...
> I'm about to drain and refill the front and rear differentials on my '98
> GC 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now.
> I'd prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?
>

Re: Differential Lubricant Recommendations?
 

Synthetic 75-90. I don't know if you'll see the difference in fuel mileage
though but it sure can't hurt. I've got Amsoil in my 99 Cherokee. I also put
Amsoil fluids in the transfer case and transmissions. I've used Mobil 1
synthetic in many manual shift VW gearboxes and always had easy shifting all
year around.

JoBo

June Snyder" <rcsnyder@yahoo.com> wrote in message
news:m86Pf.14219$iR1.7978@tornado.rdc-kc.rr.com...
> I'm about to drain and refill the front and rear differentials on my '98
> GC 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now.
> I'd prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?
>

Re: Differential Lubricant Recommendations?
 

Synthetic 75-90. I don't know if you'll see the difference in fuel mileage
though but it sure can't hurt. I've got Amsoil in my 99 Cherokee. I also put
Amsoil fluids in the transfer case and transmissions. I've used Mobil 1
synthetic in many manual shift VW gearboxes and always had easy shifting all
year around.

JoBo

June Snyder" <rcsnyder@yahoo.com> wrote in message
news:m86Pf.14219$iR1.7978@tornado.rdc-kc.rr.com...
> I'm about to drain and refill the front and rear differentials on my '98
> GC 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now.
> I'd prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?
>

Re: Differential Lubricant Recommendations?
 

I would recommend what the owners manual calls for....

I would stay far far away from unapproved snake oils and go with a real
brand name oil.

Do you know if the diffs have limited slip in them? If so that takes a
different additive than regular oil. There should be a tag on the diff
for ID, but if not, you can jack up both back wheels and spin one to see
if the rear is an open or not. If open, the wheel on the other side
will turn opposite, if it has a limited slip, the wheel turns the same
direction.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

RCSnyder wrote:
>
> I'm about to drain and refill the front and rear differentials on my '98 GC
> 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now. I'd
> prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?

Re: Differential Lubricant Recommendations?
 

I would recommend what the owners manual calls for....

I would stay far far away from unapproved snake oils and go with a real
brand name oil.

Do you know if the diffs have limited slip in them? If so that takes a
different additive than regular oil. There should be a tag on the diff
for ID, but if not, you can jack up both back wheels and spin one to see
if the rear is an open or not. If open, the wheel on the other side
will turn opposite, if it has a limited slip, the wheel turns the same
direction.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

RCSnyder wrote:
>
> I'm about to drain and refill the front and rear differentials on my '98 GC
> 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now. I'd
> prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?

Re: Differential Lubricant Recommendations?
 

I would recommend what the owners manual calls for....

I would stay far far away from unapproved snake oils and go with a real
brand name oil.

Do you know if the diffs have limited slip in them? If so that takes a
different additive than regular oil. There should be a tag on the diff
for ID, but if not, you can jack up both back wheels and spin one to see
if the rear is an open or not. If open, the wheel on the other side
will turn opposite, if it has a limited slip, the wheel turns the same
direction.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

RCSnyder wrote:
>
> I'm about to drain and refill the front and rear differentials on my '98 GC
> 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now. I'd
> prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?

Re: Differential Lubricant Recommendations?
 

I would recommend what the owners manual calls for....

I would stay far far away from unapproved snake oils and go with a real
brand name oil.

Do you know if the diffs have limited slip in them? If so that takes a
different additive than regular oil. There should be a tag on the diff
for ID, but if not, you can jack up both back wheels and spin one to see
if the rear is an open or not. If open, the wheel on the other side
will turn opposite, if it has a limited slip, the wheel turns the same
direction.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

RCSnyder wrote:
>
> I'm about to drain and refill the front and rear differentials on my '98 GC
> 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now. I'd
> prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?

Re: Differential Lubricant Recommendations?
 

i use royal purple



"RCSnyder" <rcsnyder@yahoo.com> wrote in message
news:m86Pf.14219$iR1.7978@tornado.rdc-kc.rr.com...
> I'm about to drain and refill the front and rear differentials on my '98
GC
> 5.9 and am open to recommendations.
>
> Fuels economy is a factor in my choice. I do not tow with the vehicle and
> most of my driving is interstate at 70+ mph.
>
> The vehicle has 107,000 miles and I put on about 30,000/year right now.
I'd
> prefer to not have to change it again for another 50-60,000 miles.
>
> Thoughts?
>
>