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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.
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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.
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.
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.
I have to use this with the severe gear synthetic gear lube SAE 75w-90. In my 2016 Power Wagon. I have always used this product in my truck I now have over 120k miles and have never had any issues with my forward or aft differential. Hopefully I'll get another 120k out of her.
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