syhthetic gear oil

[RAPID RICK]

Just switched the rear end over to Rotella
80/140 syn. & was wondering if I should put
the limited slip additive or run it w/o until
I see if it is going to chatter in the corners. Any & all opinions are appreciated.
thanks Rick

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99 3500 4x4 QC,5spd,3. 55 posi,turn over ball goose neck hitch,Putnam class V reciever hitch,Alcoa alum. wheels,275 hp inj. home built boost module,4 in. straight exhaust(built it in my shop)Pac brake,4 leaf overload springs,all options execpt leather & keyless entry,2000 Artic Fox 10 ft. camper,with slide out 2horse tongue pull trlr. ,24 ft flat bed that I haul my 6200# modified alcohol burning Ford 4x4
pull truck on.

 

[highland]

I run Mobil 1 Syn (75W-90). The product states that it already has friction modifiers and no additional is necessary. I do get a bit of chatter in slow sharp corners, but performance otherwise is excellent.

 

[trucknut]

Rick I ran 85w140sny,mobil 1 in my 98 dana 80 diff. It took a few miles of driving but the Limted slip began locking while turning corners. Put in the additive, end of problems. if your going on a trip be prepared.

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