Suspension thread

[Irving]

Copy that. I've heard people not want to use synthetic in diffs with LSD out of fear that it'll be "too slippery" for the clutches. Anyone have an opinion on that?

[Martinjmpr]

Copy that. I've heard people not want to use synthetic in diffs with LSD out of fear that it'll be "too slippery" for the clutches. Anyone have an opinion on that?

IIRC most manufacturers of LSDs have specifications of what type of lube to run. Also some LSDs require a "friction modifier" in the diff (I think my 1990 Montero did and I had an Auburn LSD in my '99 Ranger that did as well.) I would go with whatever the manufacturer recommended, if that's dinosaur juice (vs. synthetic) then run that.

I know Isuzu had some relationship with GM in the US so I'm wondering if your LSD might be the same as the G80 differential on many GM vehicles (including my '04 Suburban?) If so there should be lots of "institutional knowledge" available on what lube would work best.