rear diff oil ???????????????????????

[4x4tolland]

Hi all, still trying to find out PROPER rear diff oil to use in my 04 X.... standard gear oil with no limited slip additive or oil with limited slip additive ??? Seems like this would be simple buttttttttt no. How does one figure out if the truck is equiped with limited slip rear end????????? The truck has a HG 49 axle which is supposed to equate to whats also know as a HB223 . which to my admitted limited understanding = 4.9 gears. Ok great still dont know if this is limited slip rear end or not. Yes i have jacked rear end up and put truck in neutral and spun one wheel. while doing this wheels travel in opposite directions....told this would indicate no limited slip????? Howeverrrrrrrrrrrrr also told this is not necessarily a definite indicator of limited slip or not as there may not be enough torque on pinnion gear to turn wheels in same direction....HELPPPPPPPPPPPPPPPPPP !!!!!!!!!!!!!

OMG any help here would be much appreciated.

Have asked this on 1st gen X fourm < the silence is deafening

 

[JeffPro4x]

If you have an lsd, you should have a sticker on the diff saying "lsd oil only" or something to that effect.

 

[Prime]

That's the only way to tell. A little orange sticker on the diff.

As far as oil, get Mobil 1 75w90. It is LSD rated and will cover you both ways.

 

[kirk]

What he said. I used the Mobil 1 and was happy with it.

 

[Bklyn.X]

For your 1st gen;

Place your X in "Park" if it’s AT, in first gear if a manual.

Chock the front tires.

Parking brake off.

Lift the back two tires off the ground.

Turn one of the lifted wheels slowly by hand.

LSD will be hard to turn, open diff will turn freely.

Place your truck neutral.

Turn one of the lifted wheels slowly by hand.

LSD will turn more freely and the other rear tire will turn in the same direction, open diff the other rear tire will turn in the opposite direction.


I used Mobil 1 Synthetic Gear Lube LS 75W-90 for my LSD equipped 2001 for years without issue.


Just some info; the factory spec for the 2000-02 Xterra h233b LSD is 138-180 ft-lbs. of breakaway torque. The 2003 and 2004 is 29-43 ft-lb. breakaway torque. Sorry...

 

[Bagsy]

For your 1st gen;

Place your X in "Park" if it’s AT, in first gear if a manual.

Chock the front tires.

Parking brake off.

Lift the back two tires off the ground.

Turn one of the lifted wheels slowly by hand.

LSD will be hard to turn, open diff will turn freely.

Place your truck neutral.

Turn one of the lifted wheels slowly by hand.

LSD will turn more freely and the other rear tire will turn in the same direction, open diff the other rear tire will turn in the opposite direction.


I used Mobil 1 Synthetic Gear Lube LS 75W-90 for my LSD equipped 2001 for years without issue.


Just some info; the factory spec for the 2000-02 Xterra h233b LSD is 138-180 ft-lbs. of breakaway torque. The 2003 and 2004 is 29-43 ft-lb. breakaway torque. Sorry...

Where’s the rear jacking point on an 02 Xterra. Going to change my differential fluid and not sure if it’s limited slip or not. Nothing on the diff that lets me know.Thanks

 

[Bklyn.X]

If you're checking if it's LSD equipped, after chocking the front tires, lift the truck from the pumkin so that the back two tires off the ground.

Wit the truck in neutral turn one of the lifted wheels slowly by hand.

LSD will turn both rear tires in the same direction, open diff the other rear tire will turn in the opposite direction.

I used Mobil 1 Synthetic Gear Lube LS 75W-90 for my LSD equipped 2001 for years without issue.

 

[Muadeeb]

Rear jacking point is either the pumpkin itself, or the spring mounts at the axle

 

[Bagsy]

If you're checking if it's LSD equipped, after chocking the front tires, lift the truck from the pumkin so that the back two tires off the ground.

Wit the truck in neutral turn one of the lifted wheels slowly by hand.

LSD will turn both rear tires in the same direction, open diff the other rear tire will turn in the opposite direction.

I used Mobil 1 Synthetic Gear Lube LS 75W-90 for my LSD equipped 2001 for years without issue.

So put the under the housing?

 

[Bagsy]

So put the under the housing?

Jack

 

[Prime]

Jack

 

[Bagsy]

Thanks so much for your help

 

[Bagsy]

I jacked my Xterra up so both tires were off the ground. Put it in neutral. The right tire moves freely both ways. The left tire doesn’t move at all. That means it’s not limited slip correct?

 

[Prime]

I jacked my Xterra up so both tires were off the ground. Put it in neutral. The right tire moves freely both ways. The left tire doesn’t move at all. That means it’s not limited slip correct?

Correct.

 

[Bagsy]

Correct.

Thanks

 

[Bagsy]

So put the under the housing?

I jacked my Xterra again. This time I put it in neutral with no parking brake. Both wheels spin freely both directions. That means what?