I have older Dodge truck with a recently rebuilt 9 1/4 using Yukon Limited Slip setup. I have receipts showing the shop used AT-210 Additive made by ATP. Looking around I see a few different things about modifiers but, wondering if I should use something different other than this product or just stick with what I have? I see Amsoil, Royal Purple, Motorcraft, and Yukon Gear have their own brand of modifier but, some look closely related even down to being the same size for fluid content. Thank you in advance for any help or information you could provide.