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Author Topic: What Gear Oil do I need to use in my Sure Grip?  (Read 1501 times)
kycarnut
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« on: April 20, 2009, 09:14:58 AM »

Yes I have another silly question  smilielol ,that I,m sure has an easy answer, but I believe there are No Stupid Questions Roll Eyes. I have recently started to rebuild my Sure Grip using a 68 Service Manual and the instructions that came with the kit. So far so good except the service manuels says "In Sure-Grip Differentials, use only the special multi-purpose gear lubricant intended for use in limited-slip differentials." brickwall then lists an old part #. I need to know what type and weight oil I should use and if I should add the "Positive Traction" addative? Thanks in advance for any and all Help.
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Ghoste
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« Reply #1 on: April 20, 2009, 09:17:55 AM »

You can use any quality hypoid high pressure gear lubricant but if you have a limited slip (Sure Grip) then you must put in a friction modifier of some sort.  There are several names and nicknames for it but if you ask for a limited slip friction modifier for the rearend, you should get what you need.
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Nacho-RT74
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« Reply #2 on: April 20, 2009, 11:44:45 AM »

80-90 oil and adding the suregrip additive
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firefighter3931
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« Reply #3 on: April 20, 2009, 03:17:01 PM »

I use 85/140 with friction modifier from the dealer.  yesnod


Ron
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mikepmcs
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« Reply #4 on: April 20, 2009, 03:22:11 PM »

yup, get it right from the dealer.  Plenty in stock.

Ron, the reason for your choice of visc?  More abuse??


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firefighter3931
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« Reply #5 on: April 20, 2009, 03:27:59 PM »

Ron, the reason for your choice of visc?  More abuse??

The 85/140 is a severe duty lube....made for abuse !  lol


Ron
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mikepmcs
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« Reply #6 on: April 20, 2009, 03:29:15 PM »

Copy! I'm good then. lol
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Dodge Don
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« Reply #7 on: April 20, 2009, 03:51:13 PM »

The Sure Grip friction modifier can be gotten at your dealership. Wait until you smell it!! If I ever get in a fight with a skunk I'm spraying it with that stuff!!
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Ghoste
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« Reply #8 on: April 20, 2009, 04:50:52 PM »

And after you get everything back in the rearend and all buttoned up, don't forget to go out in a parking lot somewhere and do a bunch of figure 8's to get that modifier worked into the Sure Grip real well.
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Dans 68
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« Reply #9 on: April 20, 2009, 04:55:08 PM »

The Sure Grip friction modifier can be gotten at your dealership. Wait until you smell it!! If I ever get in a fight with a skunk I'm spraying it with that stuff!!

...and it is toxic. Just a heads up.... 2thumbs

Dan
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Ghoste
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« Reply #10 on: April 20, 2009, 05:15:23 PM »

That's pretty much the stock warning for all petrochemical products though.  icon_smile_wink
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Dodge Don
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« Reply #11 on: April 20, 2009, 05:37:15 PM »

That's pretty much the stock warning for all petrochemical products though.  icon_smile_wink

Hey....Dupont wouldn't make it if it wasn't edible  Shocked
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Dans 68
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« Reply #12 on: April 20, 2009, 05:52:39 PM »

Well, I don't mind getting all messy with my oil changes (motor, that is) but there is something about severely hydrotreated petroleum oil that just does not sit well on my hands....

And I do try to wear gloves if they are handy.... icon_smile_wink

Dan
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« Reply #13 on: April 20, 2009, 06:23:38 PM »

I do too anymore.  I didn't for many years so the damage is probably already done but no sense helping it along now that I know better.
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AmadeusCharger500
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« Reply #14 on: December 20, 2012, 12:57:20 PM »

Sorry to repost from something so long ago but this had my answer in it.

Just wanted a little more detail.

My sure grip is a rebuilt detroit rocker. I put the clutches in but did not install  the ring and pinion. The clutches came with an additive. Is it ok to get the 80/90 from local auto store and add the additive, instead of going through a dealership (much farther drive)? If so then brand recommend would be appreciated.

H
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randy73
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« Reply #15 on: December 20, 2012, 01:13:41 PM »

You do not have to use dealer gear oil, I use Valvoline and Ford performance friction modifier.
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Chippa
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« Reply #16 on: December 30, 2012, 08:00:32 PM »

I have used in my newer cars with lim slip diff,Castrol SAF-XA 80w140 here in Oz.....it already has the additive that Ford and Holden want i at the maximum amount think its called Sturaco 7098......was thinking of using it in my Charger as well  Twocents
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