Posted By: wvmarv
Sure Grip Additive. How much? - 11/09/11 05:22 PM
Getting ready to swap center sections in my 8 3/4 rear. I forget how much Sure Grip additive to add. It's either 1 or 2 4oz bottles. Can someone jog my memory. Thanks in advance.
Posted By: dirtybee
Re: Sure Grip Additive. How much? - 11/09/11 05:28 PM
i have always just put 1 of those small bottles of mopar additive with gear oil.
Posted By: larrymopar360
Re: Sure Grip Additive. How much? - 11/09/11 06:39 PM
Per Mopar it is one 4 oz. bottle.
Posted By: ademon
Re: Sure Grip Additive. How much? - 11/09/11 06:51 PM
the least you can get away with without chattering or popping, the additive is actually not great for the diff fluid.
Posted By: terzmo
Re: Sure Grip Additive. How much? - 11/09/11 09:03 PM
I always use 1 4 oz bottle.....doing for years
Posted By: Kern Dog
Re: Sure Grip Additive. How much? - 11/10/11 06:32 AM
Wasn't there a FORD additive that someone here suggested a few months back? I seem to recall it being a good product but had a terrible stench to it.
Posted By: dirt
Re: Sure Grip Additive. How much? - 11/10/11 02:35 PM
i use one bottle in mine. i got it from napa
Posted By: DAYCLONA
Re: Sure Grip Additive. How much? - 11/10/11 03:31 PM
If you use the Lucas diff gear oil, it already has the additive in it, no need to purchase/add the additive
Posted By: StealthWedge67
Re: Sure Grip Additive. How much? - 11/11/11 04:48 AM
Those in the know seem to agree that the Ford stuff is the best stuff out there. It stinks like nothing else, though. I recently put (2) bottles into my 8-3/4 with a rebuilt Eaton powerlock.
Posted By: Kern Dog
Re: Sure Grip Additive. How much? - 11/11/11 05:24 AM
Sorta off-topic, but.....
Why would a CONE type differential need a friction modifier? It makes sense in a clutch type unit, but a cone diff is always metal to metal. What about a Detroit Locker? Thats another mechanical/ratchet type with no sliding parts: Its either locked OR open....
Posted By: StealthWedge67
Re: Sure Grip Additive. How much? - 11/11/11 06:10 AM
Who said anything about a cone unit?
Posted By: DoctorDiff
Re: Sure Grip Additive. How much? - 11/11/11 06:23 AM
Both clutch and cone differentials must SLIP when the vehcile turns. Because of this, they both require friction modifier additive.
An open (standard), locker (ratchet) or worm gear (torque senstive) differential does not require the additive because their internals do not slip.
Posted By: 472 R/T SE
Re: Sure Grip Additive. How much? - 11/12/11 08:56 AM
Is there a part # or special name for the stuff from Ford?
I remember Dennis telling me the name of the aftermarket stuff was "something punch"
So, a 4 ounce bottle of the stuff mixed in for a new/rebuilt Power Lock?
Posted By: dOc !
Re: Sure Grip Additive. How much? - 11/12/11 12:18 PM
whatchooguyzdoin' ? ..
JUST GET the best stuff ...Mobil 1 or the original Mopar dope and FURRget that GM and Ferd stuff ...
Posted By: DennisH
Re: Sure Grip Additive. How much? - 11/12/11 01:26 PM
3:54 Dana. AmsOil. No additive needed. No chatter.
