Ok guys for those of you that have a true trac in the rear got a few questions. I for one am tired of the open diff in this snow so I just ordered one from summit. A few questions though. For one, what fluid did you guys choose? The website says anything that is non synthetic. Also what else needs to be replaced while in there? The shop that is gonna do it said just the carrier bearing I believe? Wanna make sure I got all my bases covered before I go through with it. Thanks!