Help Support Ford Raptor Forum by donating:


New Rear diff cover and fluid change

Discussion in 'Ford Raptor Maintenance Forum' started by mpk1996, Jun 27, 2019.

Car Parts
  1. SVTFordRaptor

    SVTFordRaptor Full Access Member

    Posts:
    533
    Likes Received:
    302
    Joined:
    Sep 20, 2014
    It doesn’t matter whether you have a Gen 1 or a Gen 2 as the rear ends are the same. Best differential oil you can run on these trucks.
     
  2. MTF

    MTF FRF Addict

    Posts:
    4,304
    Likes Received:
    1,235
    Joined:
    Nov 27, 2010
    Location:
    NYC
    Gen 1's require 75W-140

    Jennies require 75W-85

    Haven't looked into what they have changed in the rear to have this difference.
     
  3. SVTFordRaptor

    SVTFordRaptor Full Access Member

    Posts:
    533
    Likes Received:
    302
    Joined:
    Sep 20, 2014
    Ford’s recommendation for the Gen 1 was not originally 75W-140. If I recall you posted a link with a chart last year or so with Ford’s fluid specificities. But originally, that was not the weight recommended by Ford. Guys were running the 75W-140 for superior protection off-road, towing, SC applications, everyday driving, and so on. The Gen 2 is no different and will benefit from it as well. My Gen 2 will be running it (just like the other trucks in my fleet).
     
  4. MTF

    MTF FRF Addict

    Posts:
    4,304
    Likes Received:
    1,235
    Joined:
    Nov 27, 2010
    Location:
    NYC
    In my 2010 1/2 manual it states 75W-140 for the Rear(E)
    And in the chart you'll see the dot which is 75W-140 for all the Gen 1's
    The front diff is a diamond which is 80W-90 for the Gen 1's
    Axle Fluids.JPG
    Axle Fulids p.2.JPG
     
  5. SVTFordRaptor

    SVTFordRaptor Full Access Member

    Posts:
    533
    Likes Received:
    302
    Joined:
    Sep 20, 2014
    Interesting. Some of the fluid capacity websites I use never had the 75W-140 as the preferred weight for the rear end.
     
  6. MTF

    MTF FRF Addict

    Posts:
    4,304
    Likes Received:
    1,235
    Joined:
    Nov 27, 2010
    Location:
    NYC
    The only reason I can think of for the weight change if they didn't change something in the rear on the Gen 2's is, to get a little more mpg for the CAFE numbers.
     
    SVTFordRaptor likes this.
  7. SVTFordRaptor

    SVTFordRaptor Full Access Member

    Posts:
    533
    Likes Received:
    302
    Joined:
    Sep 20, 2014
    Yea, that and the fact Ford wanted to insure the Jenny got better fuel economy than the Gen 1. LOL hence why they have c range tires, auto stop, and so on.
     
    MTF likes this.
  8. Wheelz96

    Wheelz96 Member

    Posts:
    47
    Likes Received:
    40
    Joined:
    Feb 19, 2020
    Location:
    Augusta
    I just replaced the diff cover with the Ford Performance. In hindsight, I should have opted for the Spicer. I ended up using a lube locker gasket and had good experience in the past. No more messy RTV silicone! Now I can change out diff oil in a breeze. I also replaced the rear pinion seal that was leaking and that's why I originally bought the diff cover. Certainly could have saved some coin if I got below the truck sooner but it sure does look good!

    Edit: Do yourself a favor and replace bolts that come with Ford diff cover. They are garbage and start to strip at around 26 Ft lbs...
    Diff Cover.PNG
     
    Wfo, JohnyPython and MTF like this.
  9. Wfo

    Wfo FRF Addict

    Posts:
    1,623
    Likes Received:
    1,122
    Joined:
    Sep 22, 2013
    Location:
    Syracuse
    Had same problem with the spicer bolts, think they are the same.
     
    Wheelz96 likes this.
  10. Mark McAwesome

    Mark McAwesome Member

    Posts:
    23
    Likes Received:
    17
    Joined:
    Jan 11, 2020
    Location:
    Iowa
    My covers sitting in the garage, waiting on my Amsoil delivery. Thanks for the tip on the bolts, will get new ones tomorrow
     
    Wfo likes this.

Share This Page