Got LSD ? Got question for you

[Pape]

Hello,

Looking at doing my axles oil change and I'm wondering: The peoples who did it in the JL and got the factory Limited Slip Differential what oil did you put in and did you need to add some friction modifier to the oil ?

trying to know if I can get away with just the standard friction modifier included in most oil or if I will need to "top it off"

Thanks

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[azwjowner]

The best way is to go to a parking lot and do a bunch of very tight figure 8 turns. If you hear chatter, it needs more friction modifier. Add until it stops.

 

[58Willys]

Buy oil with friction modifier in it.

 

[Wendi20]

Hello,

Looking at doing my axles oil change and I'm wondering: The peoples who did it in the JL and got the factory Limited Slip Differential what oil did you put in and did you need to add some friction modifier to the oil ?

trying to know if I can get away with just the standard friction modifier included in most oil or if I will need to "top it off"

Thanks

What axles do you have> M186 and M220? Recommended for JLU Sahara w/limited slip is a gear oil with the specification "75W-90 GL-5" that includes a friction modifier additive. Check the label, to verify it has friction modifier in it.

 

[Pape]

The best way is to go to a parking lot and do a bunch of very tight figure 8 turns. If you hear chatter, it needs more friction modifier. Add until it stops.

Ya just wondering if the oil itself will be ok or need to add some extra friction modifier.

What axles do you have> M186 and M220? Recommended for JLU Sahara w/limited slip is a gear oil with the specification "75W-90 GL-5" that includes a friction modifier additive. Check the label, to verify it has friction modifier in it.

Yes, the manual say API GL-5 and next line say: Models equipped with Track-Lok Limited Slip Differential require a friction modifier additive.

So here I'm seeking experience from other factory LSD owner to see if the GL-5 is enough or I will need to top it off.

 

[58Willys]

Ya just wondering if the oil itself will be ok or need to add some extra friction modifier.



Yes, the manual say API GL-5 and next line say: Models equipped with Track-Lok Limited Slip Differential require a friction modifier additive.

So here I'm seeking experience from other factory LSD owner to see if the GL-5 is enough or I will need to top it off.

You need to use an oil with friction modifier in it. Either get oil with the friction modifier in it from the manufacturer, or add it later. Prettying simple.

 

[Pape]

You need to use an oil with friction modifier in it. Either get oil with the friction modifier in it from the manufacturer, or add it later. Prettying simple.

As stated above: is the oil with friction modifier enough or I will need to top it off with additional friction modifier ?

 

[azwjowner]

As stated above: is the oil with friction modifier enough or I will need to top it off with additional friction modifier ?

This is really specific to your axle and how worn your clutches are. Generally you don’t need to add more friction modifier, but no one can say for sure. If your question is should you bother to purchase friction modifier in advance of changing the gear oil, I probably wouldn’t.

 

[Pape]

This is really specific to your axle and how worn your clutches are. Generally you don’t need to add more friction modifier, but no one can say for sure. If your question is should you bother to purchase friction modifier in advance of changing the gear oil, I probably wouldn’t.

Thank you, exactly what I was looking at.

 

[58Willys]

As stated above: is the oil with friction modifier enough or I will need to top it off with additional friction modifier ?

No, you don’t have to add additional stuff.

 

[gek]

I use this and I don't add anything additional. If you have the tow package I think you would get the 75-140 instead.

https://www.amazon.com/dp/B08K9CGB6Y?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2

 

[Pape]

I use this and I don't add anything additional. If you have the tow package I think you would get the 75-140 instead.

https://www.amazon.com/dp/B08K9CGB6Y?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2

Do have the tow package but I tow light. The question of the 90 or 140 I would answer by looking at the state of my current oil and go from there.

 

[20-Willys]

I used the Valvoline as well without issue.

 

[Jeep Wick]

Hello,

Looking at doing my axles oil change and I'm wondering: The peoples who did it in the JL and got the factory Limited Slip Differential what oil did you put in and did you need to add some friction modifier to the oil ?

trying to know if I can get away with just the standard friction modifier included in most oil or if I will need to "top it off"

Thanks

Any limited slip compatible gear oil should work. I personally use Mobil 1 75W-140
https://www.mobil.com/en/lubricants...cts/products/mobil-1-syn-gear-lube-ls-75w-140

 

[zouch]

buy an oil with the Friction Modifier in it and forget about it.

the factory LSD doesn't do much and won't last long anyway.

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