I am an idiot: limited slip additive, will it harm my diffs??? (2012 Power Wagon)

Discussion in 'Axles / Suspension / Tires' started by 87GMCJimmy, Mar 21, 2014.

  1. 87GMCJimmy

    87GMCJimmy Well-Known Member

    Joined:
    Apr 24, 2007
    Location:
    Harrisburg,NC
    Well CRAP!!! So… changed my diff oil yesterday, cleaned my locker magnets really nice, installed my GP101 diff magnets, replaced my front axle breather tube (had a big gaping tear in it, prompting all this), and installed my Carli diff guard. Decided to change my rear diff oil too while I was at it. Truck is a 2012 Power Wagon, manufacturer's specs call for 75w90 and say limited slip additive not needed.

    BIG ISSUE!!!!!!: Woke up this morning and realized I have a problem- I didn't notice it yesterday but, the 75w90 I bought has (noted in the tinyest letters on the whole bottle) "limited slip friction modifier included" so, how f-ed up is my truck now? I've only driven it about 40 feet- just moved it out of my wife's spot on the driveway and into mine. What should I do? Is just draining and replacing the fluid going to be enough or do I need to figure out a way to flush it out? (can't use brake clean to clean it out, it eats up the locker's wiring) Am I royally f-ed??? I can't believe I didn't notice it had the modifier but dang the print is small!!! (Yeah, I now realize it does say LS but, in ten times looking at the dang bottle I never noticed it, DOH!!!! I feel like a total idiot now that I see it!) Will it harm my lockers???

    Thanks!!!
     
  2. Jody Treadway

    Jody Treadway Croc wearing fool Moderator

    Joined:
    Mar 20, 2005
    Location:
    Hendersonville, NC
    Won't hurt a thing.
     
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  3. 87GMCJimmy

    87GMCJimmy Well-Known Member

    Joined:
    Apr 24, 2007
    Location:
    Harrisburg,NC
    Cool, thanks man!!! I was freakin out when I saw it this morning!!!! :eek:
     
  4. Ron

    Ron Dum Spiro Spero Moderator

    Joined:
    Apr 16, 2005
    Location:
    Sharon, SC
    This thread delivers....between the panic grief stricken OMG!!!!!! AXLE Death!!!! Question

    To Jody...sipping a cup of coffee...Fawk it. its fine.
     
  5. BrianGreen

    BrianGreen SSG Brian Green

    Joined:
    Apr 5, 2008
    Location:
    Kings Mountain
    Cant blame him, he is a buisness man. Gotta look out for future gear setups!
     
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  6. 6BangBronk

    6BangBronk Well-Known Member

    Joined:
    Jul 15, 2005
    Location:
    Durham
    I've never heard of additive included in the gear oil? I'll be reading the fine print for now on but what if you add additive and the oil already had it in it???
     
  7. 87GMCJimmy

    87GMCJimmy Well-Known Member

    Joined:
    Apr 24, 2007
    Location:
    Harrisburg,NC
    Here's what I (mistakenly) used:
    athelubricantstore.com_media_catalog_product_cache_2_image_37085effc2370ca1ad1523ccd25751e7ce5.png :

    Yeah, I know, looking at it now, it's really obvious that it's for limited slips (Synthetic Gear Lubricant LS) but, honestly, I looked at the bottles ten times before I noticed the LS. Heck, I didn't even notice the "Limited Slip Friction Modifier Included" line until this morning, that's some tiny subtle print there! (still somehow noticed that small print well before I noticed the LS (looked at it three more times and didn't notice the LS, DOH!!!!)) They used to make the LS a LOT more obvious, like this (the biggest print on the bottle other than the brand!):
    ashop.advanceautoparts.com_wcsstore_CVWEB_staticproductimage__f16c9b1e023a61bb8f19508d4686003b.jpg
     
  8. snappy

    snappy YHDG's adopted son!!! Moderator

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    Jun 19, 2007
    Location:
    high point
    Just gonna stink more when you change it!!!
     
  9. Chris_Keziah

    Chris_Keziah Joe Dirt

    Joined:
    Dec 1, 2010
    Location:
    Winston-Salem
    About 80% of the gear oil part's stores sell have a limited slip additive in them. At least from what I've seen.
     
  10. gary.h

    gary.h Active Member

    Joined:
    Nov 4, 2013
    Location:
    Colfax
    Those axles are ruined. Order up some replacements from Mopar and sell the junk ones to me for scrap.
     
  11. WARRIORWELDING

    WARRIORWELDING Owner opperator Of WarriorWelding LLC.

    Joined:
    Jan 6, 2008
    Location:
    Chillin, Hwy 64 Mocksville NC
    Even the limited slip axles in newer Dodges only require synthetic fluid. Reason is the unit uses no clutches or friction disc of any sort. Uses this hypoid gear design where the diff make fluid pressure to drive the side gears to make a limited slip. I'm not sure I even got my head fully wrapped around the concept. And the additive in the modifier's are only their to quiet the action of the limited slip and prevent disc shutter. Seems the average consumer wanted a fancy traction device you couldn't tell was their, so the modifier was added. At least that's the story I got from FORD.
     
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  12. Croatan_Kid

    Croatan_Kid How's your hammer hangin'?

    Joined:
    Nov 4, 2007
    Location:
    New Bern
    :lol: Greatest thread ever!
     
  13. 87GMCJimmy

    87GMCJimmy Well-Known Member

    Joined:
    Apr 24, 2007
    Location:
    Harrisburg,NC
    Gary- I appreciate the offer, that's good of you man!!! LOL! :p :lol: :D

    Thanks for all the quick responses y'all! (and humor too!) I was in quite a panic!!! Feeling a lot happier about the whole thing now. I still feel like an idiot but, at least I know my truck will be okay! Thanks everybody!
    :beer:
     
  14. rodney eppes

    rodney eppes Well-Known Member

    Joined:
    Feb 3, 2010
    Location:
    Mt.Holly NC 28120
    Made me go check mine, but my Old bottle is not LS. First I've seen. Once I "Thought" it would be ok to replace the modifier, with Synthetic; What could be slicker? Locked up my cones/clutches!

    HEY? What's everybody UP for? If I wasn't meeting Family for breakfast, I'd still be in bed!:(
     
  15. gary.h

    gary.h Active Member

    Joined:
    Nov 4, 2013
    Location:
    Colfax
    For what it's worth that's the only synthetic they make now and the bottle states it for standard and limited slip diffs. Also says you can add additional additive.
     
  16. pipeline

    pipeline Well-Known Member

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    Nov 8, 2005
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    Albemarle

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