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Differential Fluid Question

WisHawk

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I was gifted 6 quarts of this. Any reason I should not use it?
2021 Ram 3500 Diesel, SRW. Light to moderate towing on occasion.
Plan is to use it front and rear differential. Any need to add a bottle of Mopar limited slip juice in the rear?

dfoil.jpg
 
I consider it a good product. Pretty much any a full synthetic you shouldn’t have any problems with it. Valvoline just did a segment on YouTube where they ran two exact motors with conventional Valvoline and one with full synthetic Valvoline 500,000 miles. 10,000 mile oil changes. Of course the conventional was starting to build up some sludge but pretty impressed.
 
is the slip good or bad

is the slip good or bad ?
I figure it can't hurt. A buddy had a 2018 HO dually and had a chatter going around corners. His rear axle isn't one with clutches as far as I know but adding LS cured the issue according to him. I added it when I changed my fluid a month ago since it was included in the Amsoil kit. I used Redline 75W140 in the first change with no issue or LS additive. Not sure what the factory fill is.
 
I figure it can't hurt. A buddy had a 2018 HO dually and had a chatter going around corners. His rear axle isn't one with clutches as far as I know but adding LS cured the issue according to him. I added it when I changed my fluid a month ago since it was included in the Amsoil kit. I used Redline 75W140 in the first change with no issue or LS additive. Not sure what the factory fill is.

No need for LSD additive on the 2018, but lots of folks run it even thou the manual says it’s not required.

For my 22 I am using Amsoil SVG 75w-90 and it’s LSD rated so I didn’t add any more. I’ve been running it for 10K miles and haven’t noticed any chatter.
 
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