Genuine Mopar Fluid 4318060AB Limited Slip Additive - 4 oz. Bottle

I was planning for a rear parking brake job, which requires pulling the axle shafts, thus opening up the differential.I later noticed that many of the gear oil choices already have the limited- slip additive, so I probably didn’t need this, but used it anyway. Note: the RAM truck rear diff holds more than one quart of gear oil, so buy two.

Used this in my 2001 Jeep WJ front and rear differentials. Seems to work fine, no noise or slippage from them.

Just did a fluid change on 2015 Jeep SRT along with the mopar slip-diff additive and transfer case mopar ATF4+ no more clunks when shifting or heavy acceleration would recommend this product can’t beat OEM next fluid change would be transmission 😁👌

Had my 2004 jeep Cherokee overland for two years ,the rear differential sounded like it was going to lock up every time I turned ,,had it serviced at two shops ,both changed gear oil and said rear differential was worn out ...I checked online and ordered this ,thinking well its only 10 bucks so why not ....after like 3 miles it worked amazing ,got over 250,000 miles on my jeep its absolutely quite when turning and alot more stable in wet turns ,and pulls out with out any noise ...simply it works !!!

This is the Mopar 4 oz. recommended limited slip additive to be added to the factory recommended weight differential gear oil during differential fluid changes. In my case it is 75w-140..... You "Just pour it in and it works". Works that is to keep your limited slip clutches from chattering OR grabbing when they are suppose to slip such as turning a corner. If you have no slip additive or not enough you may hear a popping noise when you turn a corner. That popping noise is the clutches breaking free from contact so the tires can rotate at different speeds during cornering. The. Limited slip additive allows the clutches to slip more easily when they are suppose to slip, such as cornering without grabbing or chattering, or making loud popping noises, etc4 oz. Should be all you need but the recommended amount on the bottle says a 2 to 5 % ratio. I installed a MagHytec differential cover that added 24 more oz. of fluid above factory but i didnt add any extra limited slip additive due to the fact i was in the 2 to 5% range near the high end at 4 % ratio.With the MagHytec differential cover my differential gear oil capacity is now at 100 oz. With 4 oz.of that being Mopar limited slip additive so i am right at 4% ratio of additive to gear oil. The factory stock differential cover capacity gear oil is 72 oz or 4.5 pints which is slightly above the recommended 5% ratio so to me It seems to be no spot on calculation worry here as long as you are near the 4 to 5% ratio. I would say the 4 oz.added to the stock or aftermarket cover and you should be good to go. I have no chatter from the 4 oz. and 4% ratio and even if i would need more limited slip additive it would only be 1 oz more to be at the 5% max. Too much limited slip additive is not good either.I did read some info on some aftermarket limited slip additives and most said the same a minimum 1.33 oz. to a max of 1.66 ounce of limited slip additive per 32 oz. Of gear oil so stock and aftermarket seem to all be in close agreement here on the 4 to 5 % ratio of limited slip additive to gear oil.I poured the whole 4 oz.of limited slip additive In before i poured in the gear oil and poured in the gear oil until the fluid just starts flowing out of the level / fill plug. Drive the truck and its all mixed or mix it with your gear oil before adding it to the differential. The directions say to shake the contents well before opening.

Slow slow slow delivery, high price. But needed for Jeep other options not much better.

If you’re changing your differential fluid and using the Mopar 75w90 gear oil on a LSD make sure you add this entire 4oz bottle. If you are using another gear oil like Mobile 1 or Royal Purple that says it already has additive in it just add 2oz or half a bottle.

genuine mopar product, shipping was fast. very satisfied