I do a fair amount of off pavement (and recently off road) travel for hunting trips. Using 4WD Low more than I ever thought I would. After waiting since March of this year to receive my order, I'm getting ready to install my new AFE Power rear diff cover. Looking on the forum for recommendations on oil. Thanks to those who contributed. Funny how opinions differ so much. May I assume that "Anti-Spin Differential Rear Axle" (as stated on my truck build sheet from RAM) is the same as "Limited Slip Differential Rear Axle" (what the oil industry calls it)?