1. flatiron44

    flatiron44 Well-Known Member

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    What is a good choice of lubricant for a sure grip 8.75 Reared ?
     
  2. Sahara

    Sahara FBBO Gold Member FBBO Gold Member

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    Watching. I need to know, also.
     
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    • mopar jack

      mopar jack Well-Known Member

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      Been using this one for years. Also add a tube of equa torque friction modifier for the sure grip clutches or cones.

      20200807_200713.jpg
       
    • khryslerkid

      khryslerkid FBBO Gold Member FBBO Gold Member

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      20200807_232921.jpg

      How many threads do we have on this now? :rolleyes:
       
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      • strokie

        strokie Well-Known Member

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        I use Red Line 75W90NS GL-5 gear oil and Red Line Limited Slip Friction Modifier for tuning slippage...
        [​IMG][​IMG]For maximum lock up add 1oz of Red Line Limited Slip Friction Modifier at a time to clutch-type limited slip units to eliminate chatter.
         
      • Suregrip391

        Suregrip391 Well-Known Member

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        Walmart Supertech 80w90 , it’s GL5 rated and the Ford friction modifier is what Cass at Dr. Diff recommends. I just put it in my Dana a couple months ago, no problems...,
         
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        • T2R9

          T2R9 FBBO Gold Member FBBO Gold Member

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          Exactly what's in mine.
           
        • beanhead

          beanhead Well-Known Member

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          Lucas 75-140 and the bearings last forever....plus a bottle of Ford additive for clutch sure grips.
          ---and always check with the manufacturer of your unit on the use of synthetic or non-synthetic gear oil.
           
        • YY1

          YY1 Well-Known Member

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          Used to be kinda hard to find that stuff and almost always ended up at the dealership paying a premium.

          Now my local O'Reily's has at least three different brands on the shelf including pre-mixed with 80/90 Castrol brand.
           
        • 5.7 hemi

          5.7 hemi FBBO Gold Member FBBO Gold Member

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          I only use the Ferd additive, that stuff can’t be beat.
           
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          • 33 IMP

            33 IMP Well-Known Member

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            Agree with 5.7 hemi. I have been hearing the ford additive works the best, for a looong time. I'm using it even in a locker.
             
          • Joe66satellite

            Joe66satellite Well-Known Member

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            Speaking of locker, how do I know if I have a locker in my Dana 60 does it click or drag a little sometimes on one side?
             
          • 33 IMP

            33 IMP Well-Known Member

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            My locker click-click-clicks, on a tight turn,in either direction, and has a little lash going from reverse to a forward gear, but it locks up like a spool at the track. If you have an IRregular banging from your sure grip, you need more "posi" lube, or go do a series of figure eights in a vacant parking lot.
            The clicking is regular, depending on wheel speed thru the turn.
            I'm sure there are lockers for danas, I just don't know how common they are. The dana sure grips are very stout, and if you need more strength from a dana , a spool is the common choice.
            I went to locker because my friend that did the setup ran his own rear end shop and got me a great discount (the locker was.much cheaper for me than any clutch suregrips I could find). For a primarily strip-occasional street car it was perfect. I just have to remember to always be going forward before applying power.
            Edit: my locker is in an 8 3/4.
             
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            • LSM360

              LSM360 Member

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              I have Mopar additive in my sure-grip. It sure did make noise without it one time when I changed the fluid and forgot to add any.
               
            • 66Satellite47

              66Satellite47 FBBO Gold Member FBBO Gold Member

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              For sure the clutch type limited slip needs the additive, Ford gets high praise, Mopar worked fine for me in the mid 70's & 80's with both 8 3/4 and Dana so did the Ford. The lube style that claims to be good for "posi" doesn't work adequately. Any of the quality gear lubes Valvoline, Lucas, Red Line, Mobile 1 with the Mopar or Ford friction modifier.
               
            • Mopars & Missiles

              Mopars & Missiles Well-Known Member

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              .....or for the purist.....

              PB070002.JPG
               
            • old guys rule

              old guys rule Well-Known Member

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              Friction modifiers for cones??
               
            • mopar jack

              mopar jack Well-Known Member

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              Probably the wrong term but was refering to the Auburn cone clutch units.
               
            • 66Satellite47

              66Satellite47 FBBO Gold Member FBBO Gold Member

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              Mopar limited slip came in two forms, the early "clutch" style and later "cone" style. Both should use the friction modifier.
               
            • Wietse

              Wietse Well-Known Member

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