Oil Suggestions | The Z Club of Great Britain

Oil Suggestions

Discussion in 'General discussion' started by 4683kelly, Mar 18, 2017.

  1. 4683kelly

    Z Club Member

    Can someone recommend which engine oil, gear oil and rear diff oil I should use for my 1972 240Z and how much of each I will need? Thanks
  2. Jimbo

    Jimbo 1978 260z in yellow

    i did some research on this recently and this is generally wat i found.
    engine oil commonly used seems to be a 10/40 semi synthetic or 20/50 millers oil
    gearbox GL4 only gear oil
    rear diff GL5 gear oil.

    all seems to depend on your cars mod and wear state.

    im using 15/40 semi synthetic engine oil
    in my gearbox im using 75/90 ep gear oil that says on the bottle suitable for GL4 applications
    and i havent got around to doing the diff yet but i will probably use the same as the gearbox oil unless some one recomends something better.
  3. toopy

    Z Club Member


    GL4 gear oil 75w90 for gearbox, not the GL5 stuff that is labelled as GL4 compatible as it can still negatively affect the syncro operation


    GL4 EP (not all GL4 is necessarily EP) or better GL5 75w90 for the diff, all GL5 appears to be EP anyway, thats Extreme Pressure by the way :)

    L24 engine uses 4.7 litres of oil
    L26 is 5.1 litres

    Gearbox is 1.5 to 1.7 litres depending on gearbox type

    Diff is 1 litre
    Last edited by a moderator: Mar 18, 2017
  4. Josh

    Josh New Forum User

  5. jonbills

    Z Club Member

    Yeah Comma are fine.
  6. Woody928

    Z Club Member

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