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Slip Lock

Product code : ADATBC-EA

5 star rating
Read 61 reviews
Read 61 reviews
See all customer reviews

Differential Additive

AMSOIL Slip Lock® Differential Additive (ADA) is formulated with advanced friction modifiers and is designed to eliminate gear-housing chatter in cars, trucks and SUVs equipped with clutch-type limited-slip differentials.
AMSOIL Slip Lock® Differential Additive (ADA) is formulated with advanced friction modifiers and is designed to eliminate gear-housing chatter in cars, trucks and SUVs equipped with clutch-type limited-slip differentials.
Product Overview

Slip Lock



AMSOIL Slip Lock Differential Additive is formulated for use with both synthetic and petroleum gear lubricants and safely replaces manufacturer-recommended friction modifiers. Its convenient squeeze-tube packaging provides quick and easy application to the gear housing. One 118-ml tube of Slip Lock treats differential capacities of two to four litres. It is not for use in automatic transmissions or other applications requiring automatic transmission fluid.

NOTE: AMSOIL synthetic gear lubes do not require this additive. However, not all differentials respond the same and the addition of AMSOIL Slip Lock will eliminate chatter in mechanically sound differentials.

  • Contains advanced friction modifiers
  • Helps eliminate gear housing chatter
  • Recommended for cars, trucks and SUVs
Technical Specification
Product Reviews

Slip Lock

5 star rating
Based on 61 reviews
Based on 61 reviews
See all customer reviews
  • 5 star rating
    smooth
    By  DAVID,  a  Verified Buyer  on  May 08, 2022
    Added this with Amsoil severe gear 75-90 oil no slip silent and smooth . Thanks again Amsoil .
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    No More Grinding Gears!
    By  Jim,  a  Verified Buyer  from  So Cal  on  April 18, 2022
    My '92 Alfa Romeo Spider had the typical grind with 1st to 2nd upshifts, all upshift needed to be slow, and all downshifts were nearly impossible without a terrible grinding. I knew the lube specifications for the Alfa transmission are important and expected the last transmission service was not done with the right gear lube. I added a 4 oz tube of slip lock to the tranny and now the synchros work like a charm. No grind on any upshift and even quick downshifts are smooth, thanks to Slip Lock.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Does the job!!
    By  STANLEY,  a  Verified Buyer  from  Smithfield NC   on  March 29, 2022
    No issues since I have been using it.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Another great product
    By  Skunk,  a  Verified Buyer  from  Alabama   on  February 06, 2022
    Used this in rear differential change along with the severe gear 75-90 and its amazing at much difference its made swapping to amsoil! Will never again use any other brand in my ss camaro.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    No chatter
    By  STEVE,  a  Verified Buyer  from  Georgia   on  February 06, 2022
    With GM’s limited split setup. Nothing is better than this product for the smoothest operation All I can say is use it and see for yourself
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good Product
    By  CARLTON,  a  Verified Buyer  on  February 02, 2022
    Good product showed up quick easy to use
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Excellent
    By  BEN,  a  Verified Buyer  on  January 29, 2022
    Great product, used with Sever Gear 75w90 to quiet rear dif gear whine on a Charger Scat Pack.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    1994 Cadillac Fleetwood RWD
    By  PAUL,  a  Verified Buyer  from  Texas   on  January 12, 2022
    Works well in the dif, added to amsoil severe 75-80. The car just glides
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    slip lock
    By  TALMADGE,  a  Verified Buyer  from  arkansas  on  December 26, 2021
    used this a number of times.nothing else on the market comes close
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Eaton posi lube
    By  GARY,  a  Verified Buyer  from  California   on  December 05, 2021
    Used this product for a 12 bolt Eaton posi differential in a 69 Camaro with carbon clutch discs for added insurance with the severe gear 75w-90 weight. Everything is nice and quiet no chatter at all. I have full confidence in this additive.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?