Rubicon gear oil

[Malice]

Wondering what gear oil to use for the rear and front diffs with lockers? Does the presence of a “friction modifier” hurt anything? I see that a limited slip calls for a modifier but I’m not sure if a locker calls for the same? Any possibility of it hurting the locker switch? I see a lot of people “potting” the switch.
I see we can use either 75-80 or 75-140 weight correct? Thanks.

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[Hootbro]

Gear oils with friction modifiers do not present a problem with electronic locker diffs.

The owners manual call out lists 75W-85 grade but most will opt for a 75W-90 as selection and pricing is more agreeable.

75W-140 grade while not called out in the owners manual, is called out in factory service data and recommended for those that tow.

Any GL-5 spec fluid in any brand will suffice. Everybody has their favorite flavor.

 

[Malice]

Thanks, I’m looking at changing both my front and rear, and was wondering if the friction modifiers would effect the locker in anyway, it seems to be a sensitive piece of tech.. anyway, on my 2022 I’ll have to remove the covers to drain the oil so I assume it would be a good time to spray any metal debris away from that sensor with brake cleaner at that time.

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