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Rear Diff Fluid...need help as soon as possible

Discussion in 'Ford Raptor Maintenance Forum' started by roscopeeco78, May 22, 2020.

Car Parts
  1. roscopeeco78

    roscopeeco78 Full Access Member

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    I changed my rear diff cover from factory to dana spicer which has two fill holes.

    I put three quarts of amsoil rear diff oil and still don't have it dripping out of the lower fill hole.

    Is is ok to top off the rear diff with another diff oil with the same weight?
     
  2. EmbDriver

    EmbDriver Full Access Member

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    no one local to you has amsoil I assume? Reason I ask is because I was bout to order some then walked into an A&A auto and they stock all amsoil crap
     
  3. roscopeeco78

    roscopeeco78 Full Access Member

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    They don't have rear diff fluid there
     
  4. roscopeeco78

    roscopeeco78 Full Access Member

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    I put in 3 quarts....Do you think I will be fine until I get another quart from amsoil?

    2013 raptor.
     
  5. EmbDriver

    EmbDriver Full Access Member

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    Well I'm not an expert...just did mine a few weeks ago, stock cover is 3 quarts....mine is also a 13. I'd say you could add same wt different manufacturer like RP or valvoline lucas etc
     
  6. gryGhst17

    gryGhst17 Full Access Member

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    It won’t hurt to use something else, like a Mobil 1. It’s all compatible even with non syn.


    Sent from my iPhone using Tapatalk
     
  7. Riddick

    Riddick Full Access Member

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    I agree. You should be good with something like Mobile 1. I just installed and topped off the other day. Takes 3 and about 2/3 qts for it to run out the fill hole.
     
  8. Marspool

    Marspool FRF Supporting Member Supporting Member

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    Changed my cover a month ago, filled w/ 3 quarts.
    Didn’t spill out hole.
    Truck runs like a champ.
    2014 Gen 1 SCAB

    32644DAB-F89E-4006-9638-577335C0B1EA.jpeg
     
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  9. Ricoman

    Ricoman Full Access Member

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    Doing exact same thing on my 2014 Gen1 SCAB....and was told 5 qts...do you fill to the top hole or bottom hole...?
    I purchased the Lube-Locker Gasket,and as soon as the cover isnt on backorder from everyone I might get to do mine...going to use what most on here recommend...Amsoil Severe Gear...
     
  10. Marspool

    Marspool FRF Supporting Member Supporting Member

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    I used bottom hole, top is for lifted where there would be a bigger driveshaft angle. I can say no way 5 qts came out with old cover. Although the new dif cover is larger.only increased capacity slightly. I do watch my temps, which are usually on the cool side, and a careful eye on how the truck runs, which is great.
     

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