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Rear end oil????

Discussion in 'The Garage' started by adamforsythe, Feb 24, 2006.

  1. adamforsythe

    adamforsythe 1/2 ton status

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    My diff cover is leaking REAL bad so I am going to change the fluid in my rear end and reseal it. Might do the front end also just for the heck of it. How heavy of oil should I use?????
    Thanks
    Adam
     
  2. bluehen

    bluehen 1/2 ton status

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    You'll be sure to get alot of different opinions on here, which is the great thing about a forum.

    I use Amsoil 80W90 in both of my diff's. I also use gaskets, but some guys prefer rtv.

    Good luck. Sounds like your Saturday morning is planned out.
     
  3. Chaddy

    Chaddy 1/2 ton status GMOTM Winner

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    I use 80/90 and permatex black rtv.
     
  4. adamforsythe

    adamforsythe 1/2 ton status

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    Good thats what I bought 80/90. How much oil will I need??? I have a little over a gallon of the stuff. I will be using a gasket with RTV (Even thou the gasket has a lifetime warrenty) hahahahahaha
    Thanks
    Adam
     
  5. bluehen

    bluehen 1/2 ton status

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    I should have posted also about the $1.99 tap that screws right onto your bottle. AZ or PB has 'em. They come with a tube that's about 12" long. Cut it to whatever length makes pouring easier and stab the bottom of the bottle when your pouring to keep it flowing.

    Of course it depends on what diff's you have as to how much you'll need. With one gallon you might be a quart or so short if you're doing both.
     
  6. sandawgk5

    sandawgk5 3/4 ton status

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    I used 80/90 and no gasket just Ultra Blue RTV. My front 60 has 3 quarts and my 14FF has 5 quarts:D .

    Ira
     
  7. cbbr

    cbbr 1 ton status GMOTM Winner

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    Go ahead and get another gallon. I used the gasket/rtv combo also and it worked great.
     
  8. trailblazr81

    trailblazr81 1/2 ton status

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    The 80/90 and always just cleaned cover and RTV'd it.
     
  9. southernspeed

    southernspeed 1/2 ton status GMOTM Winner

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    Gaskets always seem to leak for me so i just use rtv now.
     
  10. trailblazr81

    trailblazr81 1/2 ton status

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    And most shops round here use rtv...
     
  11. stevos67k20

    stevos67k20 1/2 ton status

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    hey this sort of off subject but, what about the axle seals for a rear 14bff? mine leak like heck and ive only pulled my axles 2 times each to clean my brakes. can i use rtv to seal it up? or should i get a new aluminum gasket or whatever it is.....? thanks a bunch
     
  12. trailblazr81

    trailblazr81 1/2 ton status

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    Go for it!! :waytogo: have a buddy that uses the stuff on everything. Including carb to manifold!! :doah: :haha:
     
  13. stevos67k20

    stevos67k20 1/2 ton status

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    sweet! thanks:)
     
  14. 4xcrazy

    4xcrazy 3/4 ton status

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    yup, that's all i ever use on the axles, thin coat of RTV and seals right up.
     
  15. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    Make sure you buy some BrakeKleen and spray the heck out of the inside of the diff to clean out any gunk that has built up in there. Before you close it up and add the new oil, let the diff sit for awhile to make sure that all the BrakeKleen gets a chance to evaporate. FWIW, I usually use a can per diff.

    Oh, I use any brand of 80/90- usually I go for the one that's on sale. And RTV for the cover.
     
  16. 77crewcab

    77crewcab 1/2 ton status

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    I work for CAT and have been using 80/90 and CAT flexible gasket sealer. It is blue rtv like stuff but I like it better and it is usually free. Leftovers from a job.
     
  17. Leper

    Leper 1/2 ton status

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    Ultra Flange II from Honda, it comes in a can like cheese whiz.


    Oh and PAD
     
  18. adamforsythe

    adamforsythe 1/2 ton status

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    I took my diff cover off and only about 2 drops of oil came out :doah: . But I didn't really drive my truck so I doubt I really hurt anything. If I did I guess I will find out and put a better axle in :D .
    Thanks
    Adam
     

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