1966 chevy c10 (gearbox and rear diff oil change)
Have an account? Register

Forgot your password?

Forgot your username?

 
Likes Likes:  0
+ Reply to Thread
Results 1 to 7 of 7
  1. #1
    I'm a newbie !
    Join Date
    Jul 2019
    Posts
    5
    Images
    1
    Post Thanks / Like
    Danbentham is offline

    1966 chevy c10 (gearbox and rear diff oil change)

    Just bought my first truck and I was just going through the basic oil changes etc.

    The rear diff has a small weep from drive shaft end I was just going to keep an eye on it and on top of it until winter.
    I had a suspicion that it was full as their is a hose to the top of the diff but I'm prity sure that's not normal but is not full as I've checked the plug on the side and so I was just going to top it up with new just unsure on what type I have some 80w 90 gear oil that I found some people use online.

    Also it's been fitted with a crash 3 speed gearbox just wondering what oil would be good to replace it with.

    Any info will be appreciated cheers

  2. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  3. #2
    Rods 'n' Sods Junkie C10apache's Avatar
    Join Date
    Jun 2018
    Location
    Aberdeenshire
    Posts
    162
    Images
    6
    Post Thanks / Like
    C10apache is offline
    Hi,

    Is it a 10 or a 12 bolt diff??
    The hose on the top is a breather hose, I fill my 12 bolt through the bolt hole on the side until it runs out, I use Motul 80/90w for open diffs as I don't have a LSD, you need an additive if running a LSD,

    Never heard of that gearbox tbh so can't help with what oil to use, Google is your friend for answers

    Sent from my LYA-L09 using Tapatalk

  4. #3
    I'm a newbie !
    Join Date
    Jul 2019
    Posts
    5
    Images
    1
    Post Thanks / Like
    Danbentham is offline
    Hi yes it's a 12 bolt cant seem to find no brand for the gear box what would you suggest for just a 3 speed manual gear box

  5. Remove Advertisements
    RodsnSods.co.uk
    Advertisements
     

  6. #4
    Rods 'n' Sods Junkie C10apache's Avatar
    Join Date
    Jun 2018
    Location
    Aberdeenshire
    Posts
    162
    Images
    6
    Post Thanks / Like
    C10apache is offline
    Quote Originally Posted by Danbentham View Post
    Hi yes it's a 12 bolt cant seem to find no brand for the gear box what would you suggest for just a 3 speed manual gear box
    Tbh I'm not sure what oil to use as I've never to change oil in any of my manual gearbox vehicles I've owned, I'm sure someone will be along with a answer

    Sent from my LYA-L09 using Tapatalk

  7. #5
    Official RnS Addict timbo56's Avatar
    Join Date
    May 2016
    Location
    S E London
    Posts
    878
    Images
    22
    Post Thanks / Like
    timbo56 is offline
    A decent SEA 90 or 80-90 multi purpose oil in both

  8. #6
    I'm a newbie !
    Join Date
    Jul 2019
    Posts
    5
    Images
    1
    Post Thanks / Like
    Danbentham is offline
    Settled on a shell spirax 80w-90, didn't get much out about liter out and back in doesn't seem like much

  9. #7
    I'm a newbie ! Hot rod Mark's Avatar
    Join Date
    Aug 2019
    Location
    Black Country
    Posts
    4
    Images
    0
    Post Thanks / Like
    Hot rod Mark is offline
    Yeah ep 80/90 should be ok for the diff but it’s smelly stuff

    Gearbox might be a Saginaw, not sure on the oil but may be the same ep 80/90

    I know a few manual trans also used auto fluid as it was easier on gearchanges

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Where you live, Town\City\County etc.

Please enter your full name
This field cannot be edited once it has been completed other than via contacting the site admin. Please make sure the information is correct first time.

Log-in

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Bookmarks

    Posting Permissions

    • You may post new threads
    • You may post replies
    • You may not post attachments
    • You may not edit your posts
    •