Gearbox and Differential Oil Change | The Z Club of Great Britain
  1. The Z Club relies on the support of it's paid members - join the club or renew your membership here.

Gearbox and Differential Oil Change

Discussion in 'S30 (240Z,260Z,280Z) Drivetrain' started by toopy, Feb 20, 2016.

  1. toopy

    toopy
    Z Club Member

    I'll probably use a Millers oil, is Ep 80w90 GL4 spec oil, ok for gearbox and diff, or is the diff GL5?

    Is there a washer on the drain plugs or are they both interference/tapered plugs?
     
  2. jonbills

    jonbills
    ZClub Administrator
    Staff Member Committee Member

    deffo GL4. No washer - tapered plugs.
    isn't 75w90 the recommended grade?
     
  3. johnymd

    johnymd
    Z Club Member

    As Jon says. Beat me too it.
     
  4. toopy

    toopy
    Z Club Member

    Cheers :thumbs:
     
  5. bluejon

    bluejon
    Z Club Member

    Just adding to this thread ... what oil would you add to a diff with an LSD. I have an R200 diff swap, but I don't know what type of LSD is in there. But it does need topping up ...
     
  6. Mr.F

    Mr.F
    Z Club Committee
    Committee Member

    Plate LSD requires LSD compatible oil. I have some Millers LSD oil left in stock.

    Tech tip - make sure filler plugs come out before you drain!
     
  7. toopy

    toopy
    Z Club Member

    So, while doing a little more research on GL4, GL5 spec gear oil before i buy any, i came across this excellent nugget of info

    View attachment GL4 or GL5 Gear Oil.pdf

    Its quite a long read, but informative for those with an interest in the differences, especially as GL4 isn't always easy to come by

    and after reading it, my question is, does the S30/S130 various gearboxes use yellow metals anywhere?
     
  8. Paul_S

    Paul_S
    Z Club Member

    Is it possible to fill the gearbox from above (i.e. remove the gear lever surround, etc.)? I was looking and I'm not sure how I'm going to get the oil to flow uphill into the box from underneath!!
     
  9. Rob Gaskin

    Rob Gaskin Treasurer in training Staff Member Committee Member

    I put a long tube into the gearbox and a funnel on the tube in the engine bay. Then when it gets almost full stop continually pouring and do it in small quantities while looking for it overflowing out of the filler and onto the floor! Or you can squeeze the bottle/s from below. Yep it's an awkward job.
     
    Paul_S likes this.
  10. Paul_S

    Paul_S
    Z Club Member

    Good plan sir! I'll get some tube that'll fit...
     
  11. toopy

    toopy
    Z Club Member

    Paul_S likes this.
  12. jonbills

    jonbills
    ZClub Administrator
    Staff Member Committee Member

Share This Page